Initially, I didn't much care for it. I was a bit worried it would detract from the experience. So, I played the single player and quite loved it. Only for the last couple nights have I tried the online aspect - I've put in around 3hrs - and I have to say it is quite excellent. Very fun. I'm now rank 10 so I've unlocked a few goodies and have played enough to have a good feel for it. I really enjoy it and am looking forward to getting home to play some more. I really like that they have that prologue to it, it makes it fit right in to Rapture. What do you think?