Both. But, I'd have to say that if I can't choose both, Awesome Rankings. They'll get competitive, and BAM. Spammers will come flocking to the Bulletin Boards.
Badges.
On the issue of BB spam: admins are here for a reason. Once users see (as if they don't already know) that spamming gets them nothing but a ticket to Bannedville, they wise up. x3
It's my job to help the next generation, and set a good example for them. And for that I'll gladly lay down my life.