Yesterday we mentioned that Sony's Kevin Butler made a bit of a mistake on Twitter, re-tweeting the Playstation 3's master signing key with a reference to Battleship. Microsoft's Major Nelson did not miss this news, and tweeted "Anyone up for a game Battleship?" on his own Twitter account - followed by a winking smiley. While all in good fun, we do hope for a Twitter war between the two companies now. It would be our gaming version of a gangster rap rhyme battle, in 140 characters or less! Awesome.