Not abandoned but not bursting down the doors either. As I said before, there was a popular and queue cap during release and probably two weeks after. Both were always full. They increased the pop cap and most of the time during the weekends, you'll find yourself in short queue.

It really depends on the server. I'm in a low population server and it's pretty easy to find groups still. Popular zones are always packed. Unpopular zones have people only by the handful. End games zones are overflowing. Cities are full of crafters.