I've become too cynical I think. My first thought was I was basically letting a potential robber (actually, my first thought was serial killer) in to my parents home with this service.
If anything, this (Geekatoo) is better. The Geekatoo website provides a means to post feedback about a tech. The profiles for the techs are also much more personal than you'll ever get to see for a company like Geek Squad.