A new cellphone service called Dodgeball helps people meet up with their friends on the fly, via mobile phone. The free service has more in common with social software that originally started on the Internet than traditional phone-company offerings.

Some people call it "Friendster for your cellphone;" others say it can "speed up serendipity." Reporter Ben Gilbert gave Dodgeball a try, to see how well it worked in allowing you to meet up with friends -- and your friends' friends -- on the fly.

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