Rdio, the social-based music streaming site founded by Skype founders Janus Friis and Niklas Zennstrom, has acquired $17,5 million in funding from a group called Mangrove Capital Partners, according to report on the TechCrunch blog. Mangrove joins the company's earlier investors Skype, Atomico Ventures, and Friis himself through several separate investment companies. Read More @ Day Trender