Possibly. That theory has been around for more than five years. Prior to 2004, Google counted every link. It was not uncommon for a site with a #1 rank position to have 50,000 or more backlinks. At that time, the shear number of backlinks was a major factor in determining rank positions.
Originally Posted by 5starpix
In a 2004 algorithm update, sitewide links were discounted in value and most sites that held #1 positions based upon massive numbers of sitewide links found that their sites dropped several pages in Google's search results. Most have never recovered their top rank positions. Think about it. Sitewide links are clearly artificial links, which all major search engines frown upon.
The situation with the value of forum links is unclear. Forum links are not sitewide links. They tend to be scattered throughout pages in a forum site. I tend to think that they have value with Google if the site they are pointed to is related to the forum theme. Links in a popular forum are also good for kick-starting a new web site, because it makes it easy for spiders to find the new site.
You will never find all of your backlinks listed in either Google or Yahoo. Both tend to show a random sampling of the links they have found. Yahoo displays many more links that Google, but that does not mean that Google is unaware of all of your backlinks. Also, finding backlinks in Google or Yahoo does not mean that they count all of those links. Links with the nofollow attribute can still show up in Yahoo and Google Webmaster Tools.
"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." -- Benjamin Franklin