Questions about Anonymous?

I recently found out about Anonymous, the internet meme that only requires that their members be anonymous. I have a few inquiries, though. First, would you consider Anonymous a cult? If so, why? If not, what would you consider it? Second: what are the activities that Anonymous members engage in, and how can you do them on a small scale? And third, regarding those wicked cool masks, where can I get a cheap one that's of relatively good quality (people who own these Guy Fawkes masks please answer that.) My mates and I want to join, but aren't sure what we're supposed to do (as in where do we go, do we protest, etc.) Thanks in advance!