Perched atop the Sources screen is a Settings button, and there have been some major additions to Twitterrific's settings options. On the cosmetic front, you can choose from three different color schemes, one dark, one gray, and one light. You can choose which photo-sharing site to use for your photo tweets, among TwitPic, Yfrog, Posterous, and Twitgoo.

Will a new version of an iPhone Twitter client change the world? Well, okay, maybe not. But Twitter and the iPhone are a perfect match of service and device. And just as Twitterrific 1.0 led the way on the App Store, Twitterrific 2.0 raises the bar in terms of being a delightful blend of functionality and usability.