Hello there, So I understand that every time I ask or answer something on forums or blogs my signature (which is the link to my site)becomes actually the back link??? Vad
you get a backlink but only when SE indexes the topic you are posting or commenting on with your signature. most of the threads don;t stay up top long enough for the SE to index them. u get backlinks and benefit in terms of PR if you start a thread that gets a lot of attention from others and forum members keep commenting on it for months. some blogs starting to use nofollow to keep spamer out. so if you comment on a blog that has nofollow added, you will NOT get backlinks. so the answer could be yes or no
Why not. Backlinks can be possible from every thread that you were posting. But I think the quality of links will only matter to index page of the forums.
You could sidestep this by embedding a link to your last thread in each new thread, making it easier for the search bots to find other content by you.
You can get backlinks in your sig but don't rely to it too much. You can gather backlinks in other way around, inbound link is one of it.