Free tool to find apps compatible with iPod Touch 2nd generation, iOS 4.2.1

I made a tool to search the iTunes store for games and other apps which are compatible with the iPod Touch 2nd gen, iPhone 3g and others under iOS 4.2.1 and 3.1.3.

iOSSearch: Find games and apps for 1st, 2nd generation iPod Touch, iPhone 3G, iOS 3.1.3 and 4.2.1

Hope this is helpful!