RoboTimbo
Hostile Nanobacon
The parts of your post that I have bolded are questions I have asked in various discussions I have had on crop circles. I, too, have searched for the approx. number of circles that have been created. It seems like you would have to have a lot of underground teams to do all of these circles but there are not enough admissions to cover all of the events. It seems like more people would talk with friends, especially with a few beers involved. But so far there have been too few admissions for the many that have been reported and photographed.
Which suggests what to you?