The average online population in the fleet on my server dropped over 30% in the last 3 weeks.
Quite a few people who reached 50, some even on a 2nd character, are not resubscribing for March.
Besides, with the complete release of information and footage from Guild Wars 2 yesterday which completely DESTROYS SWTOR in almost everything except maybe story, and even then GW2 seems to be doing quite well there too, and for NO SUBSCRIPTION.
Except SW fans, I can't see who is going to continue paying 15$/month for almost nothing to do, not in 2012. WoW got away with it because it was first of the new gen, but SWTOR is the last of that gen.