A suspiciously high number of backlinks from some related niche websites that aren’t too great in quality. In my opinion, this could be an indicator that the domain name was using a Private Blog Network (PBN) service or their own PBN to boost their authority…this blackhat tactic can work, but it places your domain name at risk and the PBN owner could pull backlinks at any time.

Your course of action really depends on how much work and effort you can put into the expired domain. If you're barely able to maintain and optimize your current site, you probably want to just 301 redirect the old site (note: see my amended comment above about the link value not likely to be passed). If, however, you're more creative and have some time on your hands, you can try your hand at crafting a microsite. If you really know your stuff and are experienced at making money off various websites, you'd probably do well with the third option.

Prospective buyers can contact domain holders directly in cases where the desired domain is no longer available. Most registries openly publish the names and contact data of domain holders. Once this information is gained, buyers can get in touch with domain holders and make them an offer for the name. Sales are also known to occur even when the original domain owner may necessarily have never had any prior commercial ambitions

This is similar to house flipping, where a home is purchased and fixed up in order to sell for a fast profit. Unlike house flipping, however, there is essentially nothing to be done with the domain name in order to increase its value. Therefore, the key to a successful domain flip is being in the right place at the right time in order to acquire a valuable domain name before it is given a higher price.
Just because a domain has expired, doesn’t mean it has to be kicked to the curb immediately. It is worth considering turning the internet address into a parked domain for a certain period of time in order to generate advertising revenue. This allows domain owners to bide their time and come up with a new web project for the domain or to find a suitable buyer.
If you buy keyword specific domains, you're really buying the type in traffic.  I use the URL builder and redirect through that URL so you can see how much traffic your getting from the keyword domain.  There seems to be no rythme or reason to what keyword domains deliver traffic and what don't.  By tracking traffic with the Google URL builder you get a feel for what names are giving you traffic and which are not. ie. the plural, the singular, two words, three words, the possessive, etc.
There is NO accurate way to predict the sale of digital assets – if someone wants it, they’ll buy it. For example, those wasting their money on useless .com’s (LLLL’s that have no rhyme or reason) will spend 3x more time and money optimizing their useless name as someone that buys ANY keyword loaded domain (regardless if a TLD or new one). But these individuals who are spending thousands on domains will eventually get stuck with these domains in favor of (you guessed it) the oft forgotten yet highly useful 1-3 keyword domains. Why? Study Google’s algorithm as I have for over a decade, and you’ll figure it out.
Expired domains are especially attractive due to key SEO factors that are primarily associated with an existing backlink profile. If you are considering buying an expired domain, you can determine the quality of it by looking at the inbound links. When it comes to assessing the value of an expired domain relevant keywords contained in the second-level domain, a possible reference to products, brands, or services are all useful.
Granted, it is not bad information, however, if EVERYONE rushes to namejet and signs up, the only people that really benefit are namejet 😉 The increase in competition means there are more bidders in the pool which will likely increase bid amounts (because the newcomers will not be able to ascertain a “true value” as much as a “pro” flipper would). The result is a lower profit margin as the method becomes saturated.
When the domain drops, the minute it drops, literally, they will try to get it and if you can get it, it’s yours. So, that’s it for expired domains. You can see it’s a little bit complicated and it takes some leg work, but if you’re interested in building a publisher network or a private blog network, this is a great way to find sites that have a great link profile without you having to actually build any links. So, that’s it for this video. I’ll see you in the next one.
In addition to the quantity of incoming links, the quality of them also needs to be accessed. The main issues here are: where does the link come from? What kind of link is it? A high quality backlink profile is usually made up of different link types such as footer and sidebar links, links in comments, forum threads, and social media posts, as well as content links that come from other similar websites. It’s necessary to find out whether these links are marked as follow or nofollow.

If you’re patient enough, you can discover at least four to five very good .COM domain names at attractive prices. However, you’ll need to carry out some research and find out the right places where they may be available. I’ve seen that such .COM deals can also be bagged from popular domain marketplaces like Flippa.com, or from the private portfolio portals of sellers, provided you employ the right strategies. You can contact the domain owners directly too. There’s no harm in emailing them directly to negotiate the prices.

Link popularity: the link popularity is a parameter that is used to quantitatively evaluate incoming links to a website. This is measured depending on the number of links to a domain according to the mantra 'the more incoming links, the more important the site'. Link popularity is generally determined by the PageRank algorithm. The PageRank only plays a minor role in determining the domain’s relevance.
Another point of concern is that many people feel that squatting or registering domains is unethical. This is because many web developers have a hard time finding relevant domain names for their projects since most of them have already been registered. Many corporate giants also frown upon the domain flipping industry because many domain names relevant to them are already registered.
The first thing you need to do is signup at Namejet in order to get your account (signup is free).  You can then use their search functionality to sort through all the upcoming domains for auction.  Place bids for $69 on the ones you want to go to auction for.  If you bid on 100 different domains for $69 each, and there is 50 bidders for each auction you need to understand you aren’t going to owe any money, you are not committing $6,900 to Namejet.  By entering that $69 you are getting an entry into the live bidding when the 30 days expire.  Only if you are the ONLY bidder on a domain would you automatically win the domain and owe $69 to Namejet.
You can turn then into content sites, set up an actual website, or try to sell that site elsewhere. You may even luck out by selling a site that's up and running and full of great content already. In this case, you can ask a higher price. Or, you can set up a shared hosting or direct hosting website. Shared hosting and direct hosting websites can be profitable too.
Control your expectations and keep them based on facts, data and expert opinions. Use a tool like EstiBot to get a general idea of how much the domain may be worth. Do understand that this is an automated appraisal tool, so take those numbers with a grain of salt. However, it’s great to get you started. You can also use paid, human-based appraisal services from Sedo and other providers, but these can get costly. If you’re not careful, you could easily overspend on such services and then realize your domain may not even be worth the appraisal fee.
What is a domain? Despite this word being mentioned so frequently, it’s often unclear what the functions and structures of domains are. Knowing the hierarchical structure of the Domain Name System (DNS) is fundamental for anyone working in IT or in any online industry. We explain the difference between top-level, second-level, and third-level domains, and how you can benefit from subdomains that...

Just because someone spent five or six figure amount on a domain name doesn’t automatically imply that he/she’ll spend the same or at least a few thousand dollars on a similar name too. Basing your domain flipping strategy entirely on what others have just bought may not be as useful as you may think. Every domain name has a story behind it and its purchase/sale is usually as unique as that story.
Now it’s time to transfer the domain name. Every site has its own process. Generally, the domain-selling sites require sellers to submit the authorisation code, which will initiate the transfer process. Once the transfer is completed, the seller can transfer funds from the escrow account to his personal account. Do check for the minimum number of days the amount must stay in the escrow account before the transaction can be completed.
The second option requires a bit more time and effort than a 301 redirect. You could do a mini overhaul of the site and turn it into a microsite for your main domain. This option is good for exact-match domains for your targeted keyword, and there are other reasons for going the microsite route that Rand's highlighted in his post about root domains, subdomains, subfolders and microsites. This strategy also works better if the old domain has decent rankings for the keywords you're targeting. 

METHOD 1: Find a domain name with huge potential and sell it as is – This option is tricky since many good domain names have already been bought, so your chance of being the next Mike Mann is highly unlikely. Understand that unless you have a single, generic word as domain name like these world’s highest-selling domains, it could take months or years to for your domains to sell.
All very relevant points for anyone wanting to sell a domain name. Sometimes it is the basic points that we need to be reminded of in a transaction like this. What is the potential of selling a .com domain that has a relevant search term to a particular industry, but hasn’t been used on a website yet? So it is a good search term but no current traffic.
As people who normally use internet only to check emails, shop, tweet, upload pictures, update facebook status or conduct some business, a large majority of us remain oblivious to the domain name and domain flipping industry. So, when we do decide to venture into it for some reason, it is only natural for us to carry some commonly known myths associated with it. It can also be easier than building a website from a scratch. Although with easy to follow guides relating to how to create a blog – many are choosing to go down this route and add value to their domain names rather than selling undeveloped.
.ac	.ae	.ag	.ar	.at	.au	.be	.bg	.br	.by	.bz	.ca	.cc	.ch	.ci	.cl	.cn	.co	.cr	.cx	.cz	.de	.dk	.do .ee	.es	.fi	.fm	.fr	.gd	.gg	.gi	.gl	.gs	.gy	.hk	.hn	.hr	.ht	.hu	.id	.ie	.il	.im	.in	.io	.ir	.is	.it	.je .jp	.ke	.kg	.kr	.ky	.kz	.la	.lc	.li	.lt	.lu	.lv	.ly	.ma	.md	.me	.mn	.mu	.mx	.nl	.ng	.no	.nu	.nz .om	.pe	.pf	.pl	.pm	.pt	.pw	.qa	.re	.ro	.rs	.ru	.rw	.sb	.sc	.se	.sg	.sh	.si	.sm	.sn	.so	.st	.su .sx	.tc	.tf	.th	.tl	.tn	.to	.tr	.tv	.tw	.ua	.ug	.uk	.us	.uy	.uz	.vc	.wf	.yt	.za

Here's a test I have in process.  I bought an old $5 closeout domain from Godaddy TDname expired auction.  I put a quick minisite up and linked to it with a crazy anchor text phrase.  The domain is ranking for that crazy term now.  It's gone through one pagerank update and I'm waiting for a second to come.  Then I'll redirect the domain to another minisite.  I suspect the second site won't rank for the anhor text, but we'll see.  
Just because something is legal does not make it ethical. While things that are legal can and often are ethical, there are practices like domain name flipping that are not ethical. Buying a domain name without intending to use it to make profit creates an unnecessary industry which costs people money and reduces general productivity and economic growth. This is the same with all practices that cost people money but do not contribute any value, most notably corruption. If we eliminated such practices our economic growth increases and general wealth is increased because our money is paying people for things that add to our lives and our communities. This does not. Evessariky reglect badly in people who choose to engage in such practices, but is a result of regulatory failure.
Once you have a name in mind, how do you know if the price is fair? I like to use namebio.com to compare the domain I’m thinking about buying with similar domains that have sold. You can enter the keyword and also use some advanced search features to see a list of names similar to yours, what they actually sold for, and when they sold. You can also research current domain sales on venues like GoDaddy Auctions and Afternic. Finally, Ron Jackson issues a weekly report on DN Journal that covers the top public sales of the week. You can use all these resources to help you price your domains correctly.
Wow I didn't expect A War & Peach novel, but, to have about 30 pages this is a very thin offering. My thought is if I get one idea from a $.99 e-book-it made it worthwhile. So there was mention in a keyword tool that might be helpful to me. But, generally speaking, As a s domain investor with sales under my belt, there is very little additional information that I can use here. If you are looking for a fast 10 minutes read this is it. I'd pass.

There's a lot of guesswork that goes into domain name investing. It's not enough to purchase domain names that are currently popular. Just like a stock, coming too late to the game won't be profitable. You have to think of the future, instead. What domain names might be profitable in the future? Is there a new product or service that may become a huge hit? Where is the future headed?
Quite a lot of the time majestic trust flow will be great but ref domains below 10 but when I check ahrefs its considerably higher for ref domains. Without ahrefs I would of passed over these domains and missed out. Worthwhile addition if your building a lot of pbns. I also use linkultra backlink for my final spam check as it checks language,site type and if backlinks are comment, profile spammed etc enabling me to check if the backlinks of the domain are solid very quick.
Know your rights under the Anti-cyber squatting Consumer Protection Act (ACPA). This is the main federal law that deals with domain name trademark disputes. These distinctions are still a legal gray area, and being able to make these claims is no guarantee you will win a case. You should consult with a copyright lawyer to help determine the validity of your defense. If you are accused of cybersquatting, you may be able to keep your domain if you can make any of the following defenses in court:
Official marketplaces offer a third possibility for domain traders to peddle their product. Domain marketplaces, such as Sedo, GoDaddy.com, or BuyDomains.com, link potential buyers with domain holders hoping to sell their prized virtual property. These platforms function as a kind of domain real estate agency and are known to demand somewhat high prices for their services.
Current Craze: When PokémonGo was HUGE last year, my domain flipping friends (Matt of Handshakin.com is one) were all about buying domains like PokeStopNearMe(.com) and other related domains associated with the PokémonGo craziness. It’s like the day trading of the domain world. You’re buying domains during the hype and hope to sell them for a higher price quickly before the hype fades.
Domains are nonmaterial goods. When sold, the only transaction taking place is transfer of domain rights from one user to another. Barring any form of copyright or trademark violation, virtually any domain name can be bought or sold. Generic domain names, such as car.com or computer.com, are not legally protected and can therefore theoretically be reserved by anyone.
As .COM is the natural domain extension for the United States based websites, it does get some priority in the Google.com’s search engine results (based on Google’s US datacenters) when competing against other countries’ domain extensions like .CO.UK, .CO.ZA, .COM.AU etc. However, .COMs don’t get automatic priority over other similar extensions like .ORG, .NET etc. that are also commonly used in the United States. All these domain extensions compete with .COMs on a level playing field.

Many people think of domain buying and selling to be one of the easiest methods of making quick money. Perhaps, you may have heard of someone buying a domain name for under $3000 and then selling it for $25,000. A quick $22,000 profit! Such stories can be very motivating! And that sort of money does exchange hands (Go through 10 of the biggest domain name sales of all time!). But these deals don’t come as easy as they seem! Ask anyone who flips domains for a living and he/she’ll tell you the amount of hard work and skill that goes into it.