The used game market is a great thing for people who barely make ends meet (like me), but still want to play the latest and greatest games.  I'm not even playing on current generation systems yet because of the cost.  I will be soon because I'll be buying someone's used 360.  If there wasn't a used market then I'm sure there would be far less people who could afford to play games. 
That being said, I'd buy the games new if I could... You know, support the studios that I like by letting them receive my moneys instead of some dude who won't stop pestering me to pre-order the newest game.  I mean those studios need the money so they can make new and better games.  You guys want new and better games, right?

http://www.newgrounds.com/portal/view/450185

I, sadly, do not have an Xbox 360.  Thus I do not have Castle Crashes, but they game is really damned appealing to me and will probably one of my first purchases on the marketplace.

I'd wait it out.  I plan on getting a Wii eventually for games like Twilight Princess, Super Mario Galaxy, and No More Heroes anyways.  They say they're developing stuff for the "core" gamer.  So hopefully that stuff will be completely bad ass.

The site looks amazing and I have the highest hopes for it.  Also, at the bottom of this window it says, "Type pages on comicvine (ex: superman, civil war) you feel this post is relevant to...".  I think you might want to change that to be a little more relevant to Giant Bomb, eh?