Members of message board communities disclose plenty of information on their profile pages, as do bloggers. In all cases, they have the option to omit or hide certain fields. Topix now discloses the location (based on IP lookup) of posters contributing to their forums. This gives a fascinating insight into what topics are important to people from which countries, however it also bypasses a very standard level of privacy - how can contributors opt out of this?
Via BuzzMachine
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