I have to say, I've used the group finder and gotten groups a bunch of times and have been fortunate enough to get good groupmates each time. It's all about knowing your role, I'm a gunslinger, so I DPS, obviously. I consider it my side job to watch the healer, if he draws any kind of aggro, I'll gladly throw myself full guns into that mob to pull it off the healer. It's a real good way to get friendly with healers because they appreciate not getting shot at while trying to heal the MT.