I can't believe people are bitching about this,saying naughty dog is greedy. They let you play the multi-player of UC3 for free up to level 15. Even if you reach level 15 you can still play indefinitely but without levelling And you can pay to unlock levelling and weapons and items that doesn't sound to bad too me.
@EPaul I have this crazy idea: Naughty Dog to offer free MP mode without restrictions, (as it was the case with hundreds of games until recently) How about that?
Free to Play is a common occurrence on PC not on consoles, this has just recently started on consoles with Killzone 3. Uncharted 3 is a AAA console game , tell me which AAA console game has made it's entire multplayer available for free? That is like Gears or Halo making it's multi-player is available on Live for free. Console Studios do not normally do this, so when a console developer makes it multiplayer available for free albeit restricted i don't really mind