As you might know, Sony is currently engaged in a lawsuit against hackers like Geohot (George Hotz) for jailbreaking the PS3. Sony says they are doing to this battle piracy on their console, and use the Digital Millenium Copyright Act to state their case (simply put, the DMCA prohibits the breaking of copyright protecting technology). Lately, companies like Google and Twitter have been dragged into the legal battle, as Sony tries to find out the identity and IP-numbers of some of their users that have discussed the hacks.
One issue Sony has been having is the leaking of the so-called "master signing key" that allows for the hacks to be carried out. It's a string of numbers and letters, and the technology giant is trying to go after the people that are spreading it. In an interesting twist of events, The Register reports that Twitter-user Exiva tweeted the key to Kevin Butler, the fake VP Sony has been using for advertising, with the message "come at me". The person controlling the Kevin Butler-account then re-tweeted (i.e. re-published) the key adding "Lemme guess... You sank my Battleship?".
Before Sony could take the tweet down, screenshots were of course taken and spread across the Internet. If this will have any impact on the hacking case is not known at this time, and it's quite clear that the person that re-tweeted Exiva's message had no idea what the string of numbers actually was.