CNET – Microsoft Outlook search extension Xobni (Windows) gets a new extension of its own this week: Twitter. This cool new extension allows you to add look-up features to Outlook to make it smarter and more socially aware (to connect to Twitter).

Best known for speedily hunting down e-mail contacts and conversations in Microsoft Outlook, Xobni also has a social networking aspect. It includes photos courtesy of Facebook, phone numbers via Skype, Yahoo Mail, LinkedIn profile information, corporate information from Hoover’s, and now, a Twitter stream.