Apparently no matter how weird, worthy, dull or deranged you are, there's a social network for you and the Crave part of the Cnet website have been good enough to pull togeter the 50 most bizarre social networks.
It makes fascinating reading what people get up to from the understandable but oddly named Sermo where over 65,000 doctors share their knowledge from the frontline of medicine, to the supportive divorce 360 for people contemplating, going through or recovering from divorce to the stalkers dream of Loopt - a friend-locator site that uses GPS to turn your mobile into a homing beacon or the dark (self explanatory) Goth passions. I personally found the my free implants the most extraordinary.
Social networking is booming with emarketer.com predicting Worldwide advertising spend on social networks forecast to reach £2bn by 2011 with roughly 11 million UK Internet users visting online social network sites regularly in 2007. And the market is booming—60% of respondents to an early-2008 survey said they had created a social network profile, up from 27% in 2007.
So if you have a brand that is interested in where they can reach recovering alcoholics (sobercircle if you are interested) or Hamster lovers (yes seriously - complete with a paw pointer - see hamsterster.com) then here is your answer !