http://news.bbc.co.uk/1/hi/technology/8521598.stm

A website called PleaseRobMe claims to reveal the location of empty homes based on what people post online.

The Dutch developers told BBC News the site was designed to prove a point about the dangers of sharing precise location information on the internet.

The site scrutinises players of online game Foursquare, which is based on a person's location in the real world.

PleaseRobMe extracts information from players who have chosen to post their whereabouts automatically onto Twitter.

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Fools...