I really like that idea, though I could see how it could easily be gamed. For example, a site with a lot of readers could ask that people "digg" their site on specific keywords.
The HeadBlade can be pretty tricky for guys the first time they use it. The key is to keep the pressure on the wheels of the razor, not the blade. Not so much pressure that it does a wheelie.
For more tips on the HeadBlade and head shaving, check out SlyBaldGuys.com.