Discussion forums can be a great place to build quality back links to your site. There are many seo experts that have shared numerous ways to build a strong link base, and they always include forums in their tutorials.

One of the main reason why forums are such a good way of building links is because most of them rank very high on search engine and also have a very strong user base, making them good not only for links but also for traffic.

Another advantage about forums is that you don't have to use any redirect or a link wheel, you can point the link directly to your money site and pass on the juice to you desired URL.
Here is a list of 50 high page rank do follow forums to start building your back links


Admin Zone

Affiliate Marketing Forum

Ck Editor

Cnet Forum

Coding Forum

Comic Book Resources

Community Center

Delphi forum

devianART

Digital Inspiration

Digital Point Forum

dnforum

Earning Money

File Sharing Talk

Filezilla Forum

Free Advertising Forum

Free Website Templates

Geekvillage Forum

Gentoo

Harmony Central

Hostgator Forum

Html Forum

Irish Webmaster Forum

Microsoft Forum

My Game Builder Forum

MySQL Forum

NamePros

Ozzu

PhpBB Forum

Search Engine Roundtable

Search engine watch forum

SEO chat

SEO Forum

SEO Panel

Simple Machines Community

Site Point Forum

Siteowners Forum

Squarespace Answers

Submit Express

Textpattern Forum

The Joomla Forum

tycoonTalk

Ubuntu Forum

V7n Forum

Videolan

Warrior Forum

Web Hosting Talk

Webhosting Forum

WebMaster World Forum

Yourkit