Killzone 3 is having its own "welcome back"

As we all know the PSN was down for about three weeks because of a hacker attack to the network, so one of the strategies that Sony has to gain costumer's loyalty again will be giving a double XP weekend starting tomorrow and ending on May 23 at 3AM EST on Killzone's multiplayer, also with some free games in the PSN Store and some other things that haven't been revealed yet but they will eventually.