The AppStore has been around a good while now. Cydia now has a retail aspect, which is being built out even more as you read this. And adding to the mix, Rock Your Phone, which we've been beta testing a while, is now live.
Rock Your Phone actually includes their own jailbreak (or soft unlock, as they've decided to coin it) software as part of the process - you'll notice the procedure is fairly similar to Pwnage Tool, but a little different, and branded Rock Your Phone. Some Dev Team help was actually put into building the application. Mario Ciabarra, creator of Rock Your Phone, says "Without the Dev Team's help, and the entire independent iPhone community - this wouldn't be possible - so we are very grateful for their help and dedication. We are intending to give back to the community as well."