a while ago i posted information on searchandgive.com which i am still a huge supporter of (and mention every chance i get), but this weekend i came across searchperks - another way you can earn "points" just by using windows live (haven't figured out if the two are mutually exclusive, but will post that information later).  searchperks uses a toolbar which tracks your usage of the service - i'm using it with ie 7 and soon ie 8 on a couple test systems.