Most popular auctions with expiring domains are at godaddy, namejet, snapnames. Search for expired domains name its very easy if you have domains list. With a bit luck, you can drop good one with PR5 cheaper like $200, just need to know which domain have not fake pr. List of domains are not free, but updated dailly with aprox. 50.000 new expiring domain names.
Sometimes people purchase domains that they plan to build a website on or sell in the future, but it just doesn’t end up happening. If an individual decides that it is no longer worth the yearly investment of keeping the domain in their account, they may choose to let it expire. Or, someone might just forget to renew the domain before the expiration date. If this happens, it’s a great chance for other domain investors to score rare domain names that are pending delete. Spending time perusing the list of recently dropped domains can be a worthwhile way to find high quality domains.
Some jerk stole my .com domain name after I had owned it for 10 years and accidentally let it expire, and he’s trying to extort lots of money from me for its return. On the site where it says who owns it, it says “Domain Status: clientTransferProhibited”. What does that mean? The domain expires on September 26. He’ll probably automatically renew it, like he has for the past couple of years. But in case it becomes available, I want to grab it. I’m the only person in the world with my name, and I posted at a blog for 10 years with that domain name. So I’m really upset I don’t have my own name anymore.

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.
That’s awesome. For someone that’s willing to “dial for dollars”, I bet there would be a percentage that would convert. It’s a funnel, and the more you put in the top, the more you’ll get out the bottom. 66% success rate sounds high, but I have no data…one would have to try it and see. If anyone is interested, I’d love to interview you after you’ve made the calls and gathered the data!
We do not only have Expired Domains, but you can also find lists of Deleted Domains for a lot of TLDs. Deleted Domains or Dropped Domains are available for registration and can be picked up for just the normal regfee at your preferred domain registrar! All Domains have the typical SEO relevant data, like Number of Backlinks, Birth Date and a lot more.