This tickles me. I haven't had time to put anything up yet, but I got cashforclunkers.ws just the other day .I love how people buy the dot coms and other familiar extensions and completely avoid some of the other extensions. Most rank high with google anyway if you have the right SEO. Not having .com in your mini-site is not the kiss of death. If nobody is using the dot com, where else will they land when those keywords are searched. Keywords in a domain name, no matter what extension, will carry a lot of weight with google. So if you're site is set up right, it could even beat the dot coms.
BTW, this is a funny story, I had a domain scalper refuse to sell a friend of mine a domain for less than $70,000. he bought eveything else, and branded it as a dot net. They'll hold on to the .com for years, but at this point, it's probably only worth $7.20, through godaddy. Moral of this story: You don't need a dot com to win.
So what cash for clunkers domain did you get for a mini-site?