Because we all need another social network in our lives, Apple introduced "Ping" as part of iTunes 10 during its big media event this week. Described by Steve Jobs as "Twitter and Facebook meet iTunes," Ping aims to let the already-existing (and quite massive) audience of iTunes users friend each other, stay up-to-date on their friends' musical tastes, and like/comment on things found around iTunes.

Getting started with Ping is fairly easy, although it takes some time to figure out how to do all the things you would want to do with the service. Ping requires iTunes 10 and is not turned on by default—it looks as if Apple is trying to head off complaints about privacy by making users turn it on themselves. Once you install iTunes 10, you can click on "Ping" in the everything-is-now-gray left-hand sidebar to get started.

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