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Forum Moderators: martinibuster
And here's a tip - if someone posts a "guide" or "strategy" that is nice, be one of the first people to "thank them" for it. If it's a good guide or strategy that thread will often accumulate external links. But usually there's a drop-off from "page 1" of a thread to "page 2" so you want to get in early. For example if webmasterworld allowed signature links I'd be hitting every single front-page discussion thread with some kind of comment :)
be one of the first people to "thank them" for it
So you compromise the usefulness of the page to humans and the relevancy of the page to Google.
Forums that allow too much of this this rarely attain the status of an authority site because people looking for information rather than publicity will go elsewhere.
It's a self-defeating link building technique IMO.
I would look at older threads and see if most of them get PR from good internal architecture. And I would look at the number of links on a page - how bad is the dilution?
I have looked at older threads that are a couple of years old in some forums and they have no pagerank. Does this mean that if you have a link to your website from one of these threads it is not going to provide any benefit in the SERP? They link may have aged but it has no pagerank.