I want to do some sig link building to a metal site... steel metal, not heavy meatal. I have seen lots of dofollow heavy metal forums, and thought it would be an interesting way to create some 'metal' back links in my signiture... Any thoughts on this idea?!
cool - as a "heavy metal" fan - that is a very interesting question. I would still think that google can figure out that your linking from forums that aren't relevant - even though they both have the word "metal" in it but mean something totally different. So when they see you backlinking from a "Van-Halen" site to your site which is about metal - they will take that as that link that isn't relevant.
just to let you know, forum sig links have very little value, if any. if you are using forum sig to promote your site and to drive some traffic, then thats different. but using the signature just to build backlinks would not be a very productive use of your time