[Striiker]

I see groups in Highpass now and then. It's not as frequest as it may have been on live where the population was over 2000. I think people in the level range required for these are in other more popular zones.
I spent my 20's in SolA. Very nice XP and very fun zone. I never did it on live so it was a new and fun experience for me. It is a bring your own group place though. There are some very cool zones in Kunark which continue to sit mostly empty of groups... Nurga, Droga, and Dalnir come to mind. I've tried in the past to get people to group there and had no luck.