Most of us are aware of the fact that top forums and blogs have included a "nofollow" attribute in their coding.By including this attribute "nofollow" in blogs and forums,the site owners ensure that the links added in the comments or signature does not affect the pagerank of the added link. In other words,these backlinks does not affect the pagerank of thier site.

Well,on a positive note,here is a best seo forum which explains how to develop on your links with sites having a "dofollow" attribute.Visit this discussion in forums.seo.com/showthread.php
?t=1792 for further details.

To what extend does Robots Meta Tags affect backlinks?Conside this scenario

A Website 'A' has a backlink from Website 'B' however, the backlink appears on a page using a robots meta tag with "Index, Nofollow". Google advises that Website 'B' provides a link to Website 'A' so it has indexed the URL, but what about the value of the backlink from such a page compared with one with no robot restrictions ?

Link development has morphed into traffic development people. Stop going after the exclusive 146th listing on the tenth page of an unrelated site’s reciprocal links section thinking you’re going to fool a good engine into thinking that means you’re worth something.

Stop aiming for the engines and aim for real, live human beings. Aim for obtaining traffic and not backlinks. Aim for obtaining attention and not pagerank. Stop aiming for the affections of a mathematical computation and aim for commendations from breathing individuals.