Palo Alto - Facebook has begun testing new privacy options. Once the changes - now in beta and not yet final - are complete, users will be able to decide who can see their Facebook posts on a post-by-post basis, according to PC World. The change is considered an important one, as the 5-year-old social-networking service further expands its user base — now at more than 200 million — and competes with Twitter, MySpace and Google.

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