I see that lots of people are using the Stumble and Digg for their sites and exchanging Stumbles and Diggs is popular. But I just followed a link or two and found a site that people can pay $2 for a Stumble or Digg (people who dont surf here and trace them for free with others ) and they outsource the Stumbling or Digg'ing to their members for $1. Might turn out to be a simple way to make a few extra $$$, PM me for details.
Its great that you are willing to share this information. A lot of people would have kept it secret. Good on you for sharing.