April Fools Starts Early With Conan O’Brien Buying Mashable Dan Koelsch, March 31, 2012March 31, 2012 April Fools is still a few hours away here on the West Coast, but as soon as the clock struck midnight out East, the games began. For instance, Mashable has been bought by Conan O’Brien for only $3,500, and he’s already made changes to the website and its Twitter. Watch…