TweetDeck raises $3 million in second round led by Betaworks

Investors in the Twitter ecosystem aren’t being dissuaded by the microblogging network’s recent moves to build or buy its own mobile apps.

Betaworks just led a $3 million second round in U.K.’s TweetDeck, a social media dashboard that helps user track status update activity across multiple networks. TweetDeck was one of the earliest companies to build third-party clients for reading tweets and it’s the second-most popular way to tweet behind Twitter’s own website, according to TwitStat. The new round should help the company keep or grow that lead. It comes on top of $2 million the company raised last fall.

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It also shows that some investors are doubling down on Twitter-dependent startups despite the angst the company triggered last month when it bought popular Twitter iPhone app Tweetie. That move raised concern that Twitter would ultimately crowd out third-party developers.

The round comes as TweetDeck just launched a new version of the software that now supports updates from Foursquare and Google Buzz. Users can post to Google’s social network directly without running into Twitter’s character limits and add location data. Like with TweetDeck’s Facebook functionality, users can also comment and like other friends’ updates. The new client also lets users mute updates from specific users or that contain specific keywords they don’t want to hear about.