I have a lot of lists that I use on OS X via TweetDeck. It's a wonderful application on OS X, I'm sort of upset it was discontinued for iOS awhile back. I mainly use Twitter for consumption rather than expression. 1. Anyways, is there an iPad application you consider optimal for Twitter power users and list use in particular? 2. I'm also fairly curious in Twitter applications that take advantage of Geo-tagging and create "near you" type Tweet map. What's that all about? Thanks!