is there a way to search for recently expired domains?
I was acctually just searching domains for future parts of my company and nothing was availible and the owners contact info on whois.net isnt valid anymore.
Does anyone know if its woth it to backorder domains? seems like a waste of $18 to me.
Best out of the box solution is Domain Research Tool, http://www.domainresearchtool.com/. Basically you can download the entire database of soon to expire domain names, and then place a filter for what word(s) you are looking for. However, most domains do not just drop anymore, they go up for auction. Expired domains that are valuable can go for anywhere from hundreds of dollars to $100,000+.
As for domains being taken after you search for them, there is a common practice known as domain kiting. When a domain name registrar registers a domain name, there is a grace period of a few days where they do not have to pay for it. This can be automated, and then the domain is "kited" along for free. Although its not really free because the registrar has to have money on deposit, which is why I think no one has put a stop to it. Last I heard this accounted for 80% or more of domain registrations.
If you want to get an idea of recent public domain name sale prices, check out http://www.dnjournal.com/domainsales.htm. Most domain name name sales are not made public.
A big part of identifying good domain names is just common sense. Single words are worth tons of money, multiple word phrases are also worth a lot if they are regularly used. For example, if you were in the tanning industry -- tanningbeds.com would be great, bedtanning.com, not so much. Non .com's take a big discount, but if you can get them dirt cheap they can be worth it.
Finally, use a domain name registrar that is trustworthy. There are huge conflicts of interests with many companies now. If your domain gets traffic, its often more profitable for them for you to lose it -- because then they park it and cash in on your traffic, or it goes up for auction. Just parked they could be making more a day off of it than a year's registration profit. I use Moniker.com now after bad experiences with every other big registrar. Its only $7.50 a domain if you deposit $1000.
And if you don't read anything I just wrote, consider this. Huuuuge online casino, bodog.com just lost their domain name from a default court judgment (plaintiff was in the US, they weren't.) My guess is that this is costing them hundreds of thousands of dollars a day in lost revenue. Your domain name is the foundation to your online business. You really, really, don't want to lose it. Trust me, I've lost more than one.