Short blog post about the loss of privacy that social networks entail. It especially looks at the emergence of foursquare and the foursquare/twitter mashup pleaserobme.com
Another social network site has been blocked in China which is location-based.
When people tried to chick-in to the location Tiananmen Square due to its 21th anniveristy, the link were blocked.
This looks at the new atmosphere of sharing all the mundane details about our lives, facilitated by sites such as Blippy, which broadcasts details about shopping habits, and Foursquare, that uses GPS to alert contacts to your location.
A fellow at the American Civil Liberties Union said, "People are not necessarily thinking about how long this information will stick around, or how it could be used and exploited by marketers."
Concerns are also raised about potential identity theft and whether accessing every scrap of data left behind by users is actually valuable.