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.
Internet users, who try to find expired domains and re-register them, will soon discover that this plan cannot be manually accomplished. Professional domain traders are familiar with the registry deletion process and rely on sophisticated algorithms that indicate when a domain is about to become available. Deletion lists are the result of this research. You can find many datasets online with domains that have already become available or will soon be. You often have to pay to be able to see this information.
I don’t think that there is a real way to sell your domain fast, you can put it up for sale, depending on domain name, but if there is a fastest way to sell domain name, it’s certainly - having a good enough name, that someone would want to buy. I don’t like .com domain names, but that’s my opinion, instead I prefer Hacks ( I’m from Serbia, therefore most of word in English, in plural ends up with ‘s’, so every word that ends with letter ‘r’ in plural gives you .RS ) so I think that here we have great Hack domain names which would sell fast. Either way, your contact information should be available in WHOIS , so if you have an interesting domain name, every buyer would like to be able to contact you directly.
Determine your domain's value. Before you start taking offers or listing your domain, take stock of its value so that you can come up with a good price. There are a lot factors to take into consideration when determining the value of a domain, so if you are unsure it may be wise to contact a company that performs these assessments. Some of the major factors include:
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.