Social network Web site Facebook announced that, beginning this Saturday, June 13, at 12:01 am U.S. EDT, all Facebook users will be allowed to choose a personalized username for their Facebook profiles. This username will replace the numerical string that appears on the URL for each user's profile page. Facebook users will be able to choose names on a "first-come first-served" basis. All at once, millions of Facebook users will be choosing usernames. If you are a registered trademark owner, or represent such an owner, it's important that you immediately register your trademark(s) with Facebook at this link in order to prevent the trademark from being registered by others as a username on Facebook.

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