Maybe they should focus on enforcing the laws they have, not forming special committees to write more. I have to believe it is against the terms of service of all these apps to conspire to commit crimes or participate in criminal activity using Twitter, Facebook, BBM, etc. Would they propose shutting down telephones, text messaging, and all other forms of communication (snail mail, singing clown telegrams, monkey butlers) which have been used for good and evil since their existence?
Just yesterday some commentator on Sky said it's the television to blame in the first place, for spreading a message that looting gets away without punishment. Internet and mobile communication came into play only after that.