A "loose coalition of Internet denizens", Anonymous consists largely of users from multiple internet sites such as 4chan, 711chan, 420chan, Something Awful, Fark, Encyclopedia Dramatica, Slashdot, IRC channels, and YouTube. Other social networking sites are also utilized to mobilize physical protests. Anonymous has no leader and is reliant on the collective power of individuals acting in such a way that benefits the movement.
According to the Report, cell phones, digital music players are signs that you may be a terrorist. It lists podcasting as a cause for concern citing a recent ban by Australia. Citizens for a legitimate government, where the document was leaked to has a write-up here.