The following do follow forums are listed according to their niche and their Page Rank. This is a huge resource for your SEO linkbuilding campaigns in order to find relevant places to promote your website.
Do-Follow Forums with PR by Niche
Webmaster/SEO/Internet Marketing Do-Follow Forums
http://www.sitepoint.com/forums/ PR7
http://forums.digitalpoint.com/ PR7 Post requirement prior to sig link
http://forums.seochat.com/ [...]