i new in blogging .i m quite known about SEO ..my blog is now on google search.but i don't know how to improve page rank and ..actually what is called permanent link building??i know about forum and dofollow blog commenting ..is this called link building ?need to know vast about how to drive traffic on blog..i post my blog daily and doing some comment on forum and other relative blogs.but my PR is still n/a..can anyone tell about permanent link..i will be glad