ProSiebenSat.1 Media, Germany’s largest commercial TV broadcaster, has bought 70 percent of MyVideo.de, a German video sharing site that it already had a 30 percent stake in, thereby buying out the site completely, reports Blognation, citing ProSieben’s recent half-yearly report. The 70 percent stake cost the company about $26 million…this follows the initial investment it did last year. The German-language PDF is here.