Anti Social Networking Order - used against the few who have not yet joined the millions on the social networking bandwagon. Also used if a member of a social networking site has far too many friends who they couldn't possibly know! Can be used as a classification of a person. ASNOs are known to spend more time online than socialising in the real world.
Parody to the British Government's ASBO (Anti-Social Behaviour Order).
Tom on myspace is an ASNO :-)