About 6 months ago I started a discussion forum using vBulletin and I've put a crazy amount of work into it, but it's finally starting to pay off. In recent weeks my traffic/user base has exploded to the point where I'm starting to worry I'm out of my league here as far as SEO goes, which concerns me because most of the new traffic is organic. I didn't expect it to grow so suddenly and somebody was just telling me that big forums can fuck up their rankings if they aren't set up the right way with outgoing link settings etc. I can keep up with most of the spam manually at this point but what basic settings do I need to use within my forum to keep spam from destroying my rankings? Is manual detection the only way? I need help from anybody who knows about running forums. Thanks in advance for your input.