Playing tag

摘要

Mobile technology: Crossing mobile phones with social-networking sites would help people find friends, and potential friends, nearby Imagine you are a woman at a party who spots a good-looking fellow standing alone in a corner. Before working up the courage to talk to him, you whip out your mobile phone. A few clicks reveal his age and profession, links to his latest blog posts and a plethora of other personal information. To many, this sounds like a nightmare. But to those building so-called "mobile" social networks, it is nirvana: linking virtual communities such as Facebook or MySpace with the real world. The idea is not new, but so far such services have not gained much traction. They have to be able to pinpoint people in order to work, but satellite positioning does not work indoors. More importantly, it is hard for such a service to gain critical mass: why join, if it does not already have many users?