I've started several sites, both forums and general blogs, about different subjects, but they never grow large.
I've started the forum, added a nice title for my forum and a good ~150 character meta description. Added my site on Google Webmaster Tools. Uploaded a sitemap. All that jazz. Added a site on facebook. Added it on a few link sites.
... Then what? You just populate it with content, or do you have another suggestion on what you do to get those first members. That's where I fail, every time.
Sorry if this has been posted before.