I think they are still a few players playing it live in UK but in Australia it is almost dead. The time difference is a big problem with UK, to get a decent number of players I have to be up at 2-4am in the morning (I have guilty of doing this far too many times) and the next working day is a real problem.
PS3 was a bit different though, a lot more people are playing for some unknown reasons, I guess all the Xbox 360 users got banned last month from playing!
If I miss it I will get on PS3 again. I am sure to miss it.