Now that it's collecting cash from Nokia for WP8, Microsoft might want to considering buying it flowers, as the mobile OS has picked up market share considerably over last quarter -- apparently at the expense of Apple's iOS. According to numbers from Kantar (which only tracked phone, not tablet OS's), WP increased its slice of the mobile pie to 5.6 percent over 4.1 percent in Q1 2013, a period in which Nokia released the