It's a panel discussion -- you want different viewpoints. Aaron Barr almost certainly has a very interesting viewpoint w.r.t. anonymous and computer security in

It's a panel discussion -- you want different viewpoints. Aaron Barr almost certainly has a very interesting viewpoint w.r.t. anonymous and computer security in general, having been on the receiving end of a highly-publicized attack. Sometimes it's just as useful to hear about how something is wrongly done.