Not a real group so much as whoever wants in, is in, on a per-effort basis; a movement is spearheaded by an individual or two and each so-called member spontane

Not a real group so much as whoever wants in, is in, on a per-effort basis; a movement is spearheaded by an individual or two and each so-called member spontaneously decides whether to participate or not. “Anonymous” is hardly a group or organization, any more than the IRC channel for your favorite framework. A weak analogy is whenever Redditors decide to contribute to a certain cause or user. No one decided for the group, and there was no real vote, but nevertheless without the community most individuals would not have contributed. Economist / Babbage: http://www.economist.com/blogs/babbage/2010/12/more_wikileaks http://www.economist.com/blogs/babbage/2010/12/more_wikileak... (I think he gets the definition of OP wrong, but everything else seems to jive with my non-firsthand understanding.)