There is a common misconception that domains expire on their expiration date. If a domain registration is not renewed by its expiration date, the domain simply goes into "expired" status, which means all services are shut off. Typically, we provide a 35-day grace period during which the current holder can still renew it for the standard renewal fee. For more information please review our domain deletion policy.
2) prerelease auctions.  These are domains where the auction venue has contracted with the registrar, like Fabulous or Moniker, to auction off non-renewed domains.  Just before a domain enters the pending delete process, it goes to a private auction to any person who has backordered the name.  Some people feel that back links on these type of auctions still provide a SEO benifit. My testing indicates that there is zero SEO benifit when these domains are redirected into another site.  So if you get a domain with "pink squirels" in a lot of achor text to a domain and then point it at your domain, you don't rank for "pink squirels"

This is in response to a question a fellow Moz community member once asked in Q&A, and we thought that it deserved its own article. Buying up expired domains, or purchasing keyword-driven domains is becoming more popular amongst the internet "get rich quick" crowd. The big question is: Can you make a profit by buying and selling domain names? If you get the right one, sure. If you plan on repeating the process over and over, probably not.

These should be more than enough to get your domain in front of tons of potential buyers. If you did a good job picking an awesome domain, you should have no problem (eventually) selling it. You need to be very patient as it could take months or even more to land a decent deal. A lot of domainers sit on domains for years before actually selling them. This is why it’s best not to obsess over a domain and simply move on with buying and listing others (or going back to your day job if this is a side gig) once you've listed the initial one.
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.
When a domain name that was previously registered expires, it goes through a grace period that allows the previous registrant one last chance to reclaim their domain before it becomes available to new buyers. If the previous registrant still has not renewed their domain after the 77 day deletion process, the domain name will officially expire and enter the Aftermarket.
Domain flipping is the art of buying a good domain name at a wholesale price and successfully selling it at a resale price and making a profit. I’ve been helping clients flip domain names for over 10 years. The skills needed to be successful is some working capital, knowledge of domain valuations and a good information flow from a trustworthy domain broker who knows the landscape and can help source you the best deals.
it can be profitable,i'm selling domains and i can tell you that all providers loose money selling domains,we compesate it with  hosting plans but if you look just domain selling where providers buying domain for 7$-10$ and selling it for 0.99$-5$ ...well like say we compesate this with web hosting plans and other services,also on when some one renew domain but since even renewal is done mostly using cupons...than giving free domain with web hosting is best solutions.Well like i say it can be profitable if you want work with domain,buying domains for 0.99$ and than work with it and you can earn nice money.
Domain names comprising of a keyword have long since been regarded as a strong pointer when it comes to search engine ranking. This connection has been proven true over time. Nevertheless, keyword domains are still popular in the domain market. One reason for this is that keyword domains are seen by potential visitors as more relevant and are therefore taken more seriously. Catchy URLs containing strong search-volume keywords are therefore often monitored by potential customers over the years. It only makes sense to purchase an expired domain when the domain name coincides with the content, products, or services that you plan to offer with that address in the future.
Once you have a name in mind, how do you know if the price is fair? I like to use 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.
This is similar to house flipping, where a home is purchased and fixed up in order to sell for a quick 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 premium price.
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.
Buying a website is a risky job especially if the investment is big. My first experience was a big fail. So after some time spent on Flippa I found out about a site called Safe Site Buying which I heard that was created by super sellers from flippa and got a coupon code "flippa50" which was supposed to give me a huge 50% discount. This deal looked pretty good to me so I tried it. They provided me with a full report, 20 pages long and with their own subjective opinion. They were very helpful. When you want to spend more than $2-3000 on a website this service is a must if you ask me.
The "Domain Lists" and the "TLDs" filter are now static and not created dynamic based on the current search. Turns out creating these 2 filters dynamically was slowing down the search tremendously. It even made certain requests impossible. For example now you can do a dot search that affects all .com domains and get a result with over 150mio domains in reasonable time. I'm also working on a new search cluster that will make searching even faster (not released yet).
Hey, what’s up everybody. It’s Brian Dean from Quick Sprout. In this video, I’m going to show you how to buy affordable expired domains and how to evaluate the potential value that an expired domain could bring to your site. Now, expired domains is pretty gray hat, black hat type of thing because there’s basically two things you’re going to do in an expired domain.
Here's an old post on search engine roundtable that claims google's policy is to discount previous backlink juice when a domain changes ownership.  I'm not convinced whether this is actually true or something Google says to discourage excessive domain buying / 301 redirecting for SEO benefit.  The comments above seem to give varying opinions on this matter. Would be great to get to the bottom of that one!

Adding domains to our Premium Listings on our website before you sell will give them more exposure to the community. We’ll offer an appraisal for your domain to give you an estimated selling price, and you can adjust that price at any time. We also offer a comprehensive breakdown of our commission rates for all premium listings, so you can easily understand the process.
What I like to do is sort by DP which stands for domain pop, and this is basically the number of linking root domains. So, BL is the number of back links. As you know that can be somewhat misleading if they have a lot of site wide links or multiple links from the same domain. I like to sort by domain pop. What that does is it brings up the sites with the most amount of referring domains.
So, what I like to do is also choose DMAS listed entry. No fake or no unsure page rank. Click the apply filter button and this will show us a much better group of websites, including a lot of high page rank websites. That’s one great thing about Go Daddy Auctions that you don’t have to guess about what the rank will be which is not the case with a lot of deleted domains which, because they were deindexed they didn’t have any content, they didn’t have any hosting, they don’t have any page rank. So, you have to make an estimation.
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.
Buying and selling domain names is an exciting adventure that for some seems to conjure up images of finding hidden pirate treasure or guessing the winning combination on the next Powerball. Stories abound of domains that were purchased for $8 dollars 15 years ago being sold today for millions. Of course, that leads the more adventurous of us to wonder, “How can I do that?”
When speaking about an expired domain’s backlink profile, this refers to the incoming links that have built up from when the domain was previously in use. Recently-expired domains that have long histories aren’t unheard of. While the pre-existing content of the domain rarely remains visible when the domain is re-registered, links on the other hand do remain, as long as the new owner doesn’t devalue or delete them.
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.
Since search engines regard inbound links as recommendations, these links have a decisive influence on the ranking. The search engine definitely doesn’t appreciate link networks and won’t give new projects a jumpstart by allowing a former website’s backlink profile to be used when registering a new domain. Using an expired domain is like playing with fire, where the worst case scenario is that you’ll be penalized or be excluded from the search index.

Check backlink profile: If you’re not familiar with what backlinks are, they’re basically any public website that “links” to the domain in question. Since there are numerous shady tactics in the SEO world, expired domains’ backlink profiles should be examined carefully. Check if too many links are coming from the same domain or if links have weird anchor texts/use foreign languages. You can use a tool such as ahrefs for these purposes.