I'm guessing the username / URL link back with a keyword to some kind of page that is needing ranked. Example: Name: "Red T-Shirts" URL (optional): "http://red

I'm guessing the username / URL link back with a keyword to some kind of page that is needing ranked. Example: Name: "Red T-Shirts" URL (optional): "http://red-tshirt-site.com/" http://red-tshirt-site.com/" Then they'll perform better for that keyword (maybe--google eventually penalizes this).