If the name UberTwitter sounds familiar, that'll be because it's one of the more popular mobile Twitter clients, accounting for 10 million tweets each day from BlackBerry users around the globe. And now it's also available on the iPhone. Citing the "growing dominance" of Apple's one-device-to-rule-them-all mobile platform, the UberTwitter crew has decided to expand its offering with a new open beta, which is available to download now. The major distinguishing feature being touted is something called UberView, which allows access to links within tweets without exiting the app or opening up a new window within it. Looks a pretty slick idea, but there are still some early issues to be ironed out -- as with all beta iterations -- and a final v1.0 should be ready to do battle with Twitter's official app by the middle of December.