I've noticed a significant drop-off of people playing over the past Month or 2 or so. The lack of people online at the same time makes it impossible or nearly impossible to get anything group-related accomplished (i.e., Flashpoints, Warzones, etc.). Depending on the Server I'm playing on, I have seen on average around 20 people or less on the Fleets (Republic and Imperial) and a lot of the ones that I see online are the level 65's (there is hardly anyone online under that that I have noticed most recently). I can remember a time when there were over 100 people logged on in the Fleet at the same time. Not so much lately, though. For whatever reason, they aren't playing anymore.