I have referred several people to the game, I just haven't done it through the gay system. I really couldn't care less about bonus xp.
Loving the game, but it seriously is nothing for me, i preffer the Old School staying relatively on the ground type of shooters. But it still is a heck of allot of fun to perform stealth-grabs. Seriously give this game a try, because, i bet all you'll be able to say to your fellow tribesers is: 'Tribes?'
Though I enjoy this game immensely, I've hit a wall and can't seem to improve much. I'm normally pretty good at FPSs, but I think it's because I've grown up with and almost exclusively played hitscan or almost hitscan shooters, and I'm still struggling to grasp the fundamental projectile and area of effect mechanics of this one.