Some elements of Anonymous, the notorious 4chan griefers, seem to have matured, graduating from mere lulz to more substantial political engagement.
A campaign against Scientololgy a few years ago gained them some notoriety, but recent direct action support for Wikileaks brought a more serious note.
Anonymous launched mirror sites to keep the Wikileaks website online in the face of presumed US government hack attacks, and coordinated retaliatory Anon DOS attacks against Amazon, Paypal, Mastercard and Visa for cutting off Wikileaks accounts.
Anonymous Op Swift Assist: Tunisia
Right now, Anon operations are expanding to include Algeria, Egypt, and an expanding list of other nations, including Albania, Syria and Libya, where similar popular uprisings are also brewing.
For the latest report on what's going down in Algeria: