Sony Experimenting with F2P: Killzone 3 multi becomes Freemium.
 

http://uk.ps3.ign.com/articles/121/1219381p1.html

Could be interesting if they and other publishers do it with other AAA titles. The multiplayer is completely free just with a level cap ala World of Warcraft and then a one-off $14.99 unlocks the whole thing. Kind of hope it catches on.

Well, it would have been great if I didn't just see you can get the full game for $14.99 used. Did it have an online pass?