UberMedia the holding company that owns Echofon, Twidroyd and UberTwitter has added TweetDeck to its portfolio of startups.

UberMedia specializes in Twitter-based start-ups. UberMedia, run by Internet pioneer Bill Gross, will pay $30 million in cash and stock for the London-based company, which has raised less than $5 million from investors in the last two years.

UberMedia has actually changed its name a few times now, partially due to these acquisitions. In April 2010, they launched as TweetUp, then they became PostUp, and then, following the UberTwitter deal, they became UberMedia.

TweetDeck is an Adobe Air desktop application, currently in public beta, that looks to capture the abundance of social media and display it in a unique columned user interface.

TweetDeck is a realtime application that allows users to monitor that information in a single concise view. TweetDeck currently integrates services from Twitter, Twitscoop, 12seconds, Stocktwits and now Facebook.