Just look at the map: Asia, US, Europe, Africa: This is something more than a few hippies. Granted some of these things are small: Occupy Somer's Point (NJ) had 7 people.
But basically, the internet is being used to spread something being run by SEIU and other related organizations. I now am beginning to see how this stuff worked in Egypt. There is no indication of who is sponsoring the movement on any of these websites. These sites are clever and look like invites to flashmobs or something similar.