Most of mine is from search engines and/or return visitors. Every now and again I'll get hit by social networking, though I try not to count that as most of them are gone in 30 seconds...
65 % traffic from search engines and rest of the traffic from other forums and some minor traffic from direct bookmark. Kailash
vbSEO and a few other mods have been added that have increased traffic quiet a bit. I have also added some interesting contests for members as well as other perks for member who really want a successful forum without to many rules and regulations. As most forums it is a work in progress and I live by the trial and error method. Thanks to all for sharing your interesting stats.