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MySpace is planning new restrictions on how adults may contact its younger users in response to growing concerns about the safety of teenagers who frequent the popular social networking site.

Several social networking competitors have cropped up recently, trying to take advantage of the safety concerns surrounding MySpace. The newest is imbee. It's intended for users aged 8 to 14. The site gives parents a significant level of control over what their children do on the site. Users can set up blogs, share photos, create avatars, and communicate with friends.