Ping, the new Apple social network is already being exploited. I think there's a quick window for the clever and bold:
http://www.macrumors.com/2010/09/02/spammers-already-hitting-taking-aim-at-apples-ping/The drugs, ringtones and dubious offers are only too obvious. I think there's room for pseudo personalities and ways to create sleeper nets for future use.
Be clever. Don't go all Syndk8 n00b and destroy the place or yourself. This is truly new ground and it won't be for long.
That is all, resume party.
/p