Most of us have several clarifications regarding pageranks.Following are some of them:

1. Do links in forum posts increase PageRank, even if the forum is not in the relevant field as the website that is being linked to?
2. Does getting into .edu and .gov forums and posting messages there and linking to our site actually help?
3. Do links in blog comments (usually you can fill out your website when commenting on blogs) help to increase the PageRank?
4. Are there any good blog post/article about increasing PageRank via backlinks?

For all this and more,check forums.seochat.com/google-page-rank-47/pagerank-questions-227262.html.Also check the vital response by ClickyB in this forum posted on Dec 20th.