Not really. I should though.
I played Call of Duty World At War multiplayer for 30 seconds and got steamrolled within 10.
I had the feeling that someone was cheating, or some 10 year olds had memorized the map.
Not that I'm afraid of losing, but I play games to relax, not to be stressed. So I kind of strayed away.
On the other hand, I should give it a second shot. I'm still busy finishing off Metal Gear though.
By the way, someone friended me on the PS3. I'm not sure who it is, because they weren't one the gamer tag thread list.