As you may aware, become an active forum members will bring you multiple benefit. If you create 1-2 posts each day on very active forums and you also create a signature with your URL it may be attract some visitor to your site. Another benefit of using signature on good forum is gaining high quality backlinks for SEO purpose. Yes, user signature in forum is a good web marketing tools.
Here is the list of good quality forum and very active. Another advantage to posting in these forums is that a lot of them have buy/sell sub forums where you can whore out your product for a few extra bucks
1. forums.digitalpoint.com/
2. v7n.com/forums/
3. www.warriorforum.com/forum
4. www.warriorforum.com/forum/
5. www.talkfreelance.com/
6. www.sitepoint.com/forums/
7. www.webmasterworld.com/
8. forums.ukwebmasterworld.com/
9. www.webhostingtalk.com/
10. www.namepros.com/
11. www.webmaster-talk.com/
12. kirupa.com/forum/
13. www.code4gold.com/forums/
14. www.ewealth.com/
15. www.ozzu.com/
16. www.webmasterforums.com/
17. talk.iwebtool.com/
18. www.webtalkforums.com/
19. www.frontpagewebmaster.com/
20. www.abestweb.com/
21. affiliate-marketing-forums.5staraffiliateprograms.com/
22. forums.seochat.com/
I found this useful list from gurucreation
