Tell me, there is an opinion that links from forums help ranking, is it worth fighting with them, do they affect the quality of the forum and what links should be left? I'm worried about their meaning and value...
I highly doubt posting irrelevant links on random forums is going to help your ranking, if that's what you're asking. It's just going to annoy the forum's users and result in the moderators removing them.
THIS ACCOUNT IS NO LONGER IN USE AND IS DEPRECIATED!
I agree. HOwever, if you have permission to post links on a popular forum and you do so being careful to make them relevant to the discussion etc.,
then it can be good for your google etc. ranking.
IF you are asking as the owner of the forum then having relevant links on your board can also help your board's ranking in google etc.
they must be relevant to the content of the site to do any one any good for SEO.