It appears that it’s people who signed up on FaceBook as friends. Probably has connections to someone like MoveOn.org etc and put the message out that way and their rabid members signed up. No real effort. My guess is that they had something sent out to an email list of FaceBook members making it really easy to join just click link.
I checked out her Facebook page shortly after she started her little decaf campaign. Judging by most of the comments, you’re right about the Moveon types. Unfortunately, as with any crowd, there are probably some well meaning individuals who want to take a stand against Obama but have been taken in by the state run media and think the TEA crowd is too rowdy, so they joined. Shouldn’t take the the brighter ones to smell a Rat. I hope.