Joined: 19 Jun 09
03 Sep 11 2:35 pm
They don't have to all be clicked on. However, Google can tell if links are getting clicks or not. Links that bring you direct traffic will do more for your rankings than links that never see any traffic. This is why getting high profile links ( such as web 2.0 sites and popular blogs) give you more benefit than mass submissions to article directories.
these links will bring you more traffic, and so Google will take notice and weigh them differently than links that don't give you any traffic at all.
I have pages that have less than 1/3 of the number of links as my competition, yet I outrank them because my links get me more direct traffic, and that traffic has a low bounce rate