Microsoft has a sense of humor about on the level of Disney when it comes to all things corporate. The latest stick in their corporate craw is a fake Steven Sinofsky Twitter account which is promising free Windows 8 upgrades for HP Touchpad owners among other things. Microsoft is probably getting a little edgy about its upcoming intro of Windows 8 and doesn’t want any negative fallout from the fake Twitter account.
"@StevenSinofsky please see guidelines on parody and impersonation. Your account is not following them and has been reported."