An Admins is a *paid* employee of the site - the only one we currently have is Colleen. I think your referring to the Advisors on the site (with the blue badges by their names). We are unpaid members of the site who were promoted to help with monitering the boards. We used to do alot more, but we dont have as many "powers" since the site changed. Mainly all we do now is move questions, edit things, delete duplicates, and help moniter the site and report bad behavior.
ask an advisor of super powers and theyll tell you :D