Something similar happend to me in an auction a couple of weeks ago, I won the item, I paid for it, got an email with receipt and all, and then the next day they took it away from me and got the refund.. I know it sucks…… Some auction sites take a lot of time to upgrade their auctions, and this complicate things to, u can win an item in sedo, and still be listed in go daddy or vicceversa, sometimes it takes them days, I once called go daddy and told them, “hey! That domain in auction is mine” , “oh, sorry we haven’t upgraded”..
If it contains any of those, then I am going to crawl it. Otherwise, I'm not going to because it's probably just something like an Amazon listing. Okay lets move on to the endless cruel. So this is the endless crawl. Basically, here you put your seed websites, one will do if it's a big website, because there's probably loads of domains on it. If it's a tiny, tiny a website, then you might want to stick a few more in so, as I was saying before, it will crawl on all the pages on these websites and then for each external domain that it finds on that website. It will check whether it's expired if it's not expired, it'll try and crawl it and then it will start the loop again, it'll try and take all the domains from there check that they are expired.
Thousands of domain names expire every day. The reasons are different. Some owners forgot to renew the domains, some just don't want them anymore or they moved on to other projects. For most people these so called Expired Domains don't have any value. They just see a bunch of Domain Names someone else deleted and move on, but for the people who know about SEO or the value of good Backlinks, Expired Domain Names are money just waiting to get picked up from the street. The only problem is to separate the good ones from the bad ones. That is where comes into play.