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Originally Posted by GiantDomains  All forum (vB) links have "no follow" values. |
Each SE responds slightly differently to the nofollow attribute. Tested logs indicate that Google will not follow the link, unless the page that is linked to is indexed and cached. Yahoo appears to crawl them regardless.
In terms of "pagerank", or "voting power", it is very difficult to identify whether these links are being discounted or devalued without controlled experimentation on a site with no existing
PR or links. But one thing is for certain, "nofollow" links categorically provides
SEO benefit in terms of regular indexing.
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Just a quick question I've always wondered: When you have a forum sig that passes to one of your sites, does that provide any link equity to the site, or not? Is there any value to it?
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Yes, but nested links, surrounded by natural content, are likely to yield a higher transfer of power/relevance. Sig Links are still a very viable source of pagerank, but just as Keyboard_(Legend)_Cowboy says, it's important that the page/site is relevant to your keywords.
Consider your link strategy carefully. If you are targeting for Google obtain fewer, more highly relevent, high authority links:
where x = pagerank value
where ~ = approximation
**(This operates on a logarithmic scale and is simplified for the purpose of this discussion)**
PR x = ~4 *
PR x+1
PR x = ~18 *
PR x
PR x = ~101 *
PR x-1
Thus, it would take an incredible number of PR3 links to acheive PR7, but only ~4 * PR8.
This simply illustrates the number of links required to acheive any given pagerank (assuming less than 50 outbound links), and that forum posting alone will not result in a site of authority.
one last related point.. DNF Exclusive forum cannot be indexed and therefor will not provide any sig benefits except direct traffic.