Depends on the forum software being used. If you study up on inbound marketing you will realize that all links (followed and nofollowed) both add weight in a search engine's eyes. A site like daniweb for example where you can get a followed link in your profile has large weight. But how does a search engine find your profile thus making the link count? It finds it by following other links within DaniWeb (ie. each time you post your username contains a followed link to your profile). The more daniweb for example, gets crawled by Google or Bing; the more links that get built to your website's followed link in your profile. Thats one of many reasons it actually pays for people to be active in online communities.
One should not aim to build forum profiles to get banned to get a no followed link; especially in larger online communities where member profiles dont get crawled very often.
Well, first of all your question isn't clear and the second thing is there are several forums who banned you down and also takes down all your posts. Now can you please be more clear and let me understand what you are seeking help on !
Hi happygeek, I want to know whether we can change our signatures regularly or not? if we change or replace old signatures link to new one then do we get backlinks for both old signature and new signature or is it only applicable for the present signature?
Well, @Scotthiggins I don't think so, if you somehow got banned from the forum and still if the forum moderator doesn't removes your post, then still the links will be counted by the crawler becase the Crawler doesn't know you are banned or ..... and that's the reason why after you get banned from the forum admins remove your post over the forum. So, I guess here you are guiding @Kiran in wrong direction.