How I became a Foursquare cyberstalker | The Guardian

Louise is a complete stranger. Until 10 minutes ago when I discovered she was located within a mile of me, I didn’t even know of her existence. But equipped only with a smartphone and an increasingly popular social networking application called Foursquare, I have located her to within just a few square metres, accessed her Twitter account and conducted multiple cross-referenced Google searches using the personal details I have already managed to accrue about her from her online presence. In the short time it has taken me to walk to this pub in central London, I probably know more about her than if I’d spent an hour talking to her face-to-face. She doesn’t know it yet, but Louise is about to meet her new digital stalker
(Link: How I became a Foursquare cyberstalker | The Guardian)