Microsoft turned the tables on Thursday with a formal complaint to the European Union accusing Google of unfair competition. The filing, backing earlier comlplaints that were partly triggered by a Microsoft subsidiary, insisted Google had systematically excluded competition. Most of the complaints focused on YouTube, which Microsoft said was deliberately excluded from search results for rivals like Bing; Google also intentionally limited Windows Phone's access to YouTube, denying them the searches that only Android and iOS devices had, Micr