NoFollow
All external links on AboutUs pages are marked with the NoFollow attribute. This means we're telling search engines not to take that link into account when they calculate the value of the linked website to determine how it should rank in search results.
This policy, initiated on 7 May 2010, represents a change from our previous ProFollow policy. Under that policy, we removed the NoFollow attribute from links on pages that had substantial and useful information on them. To learn why we changed our policy, please read the post on our blog.