As some of you may know, Facebook has been testing usernames for its accounts. Previously accounts were identified through a user number and name, and thus URLs for Facebook pages would look like: www.facebook.com/people/Owen-Smigelski/714352306.
Facebook announced on June 9 that on Friday, June 12 at 9:01 PM (Pacific), username registration will go live for all users. This will allow for a simpler user page such as http://www.facebook.com/owen.smigelski (however I personally hope to register as “owen”).
This could pose a problem for trademark holders, with the classic Web 2.0 foible of third parties registering trademarks as usernames. Facebook has attempted to address this, and has a form entitled “Preventing the Registration of a Username” for trademark holders. The form is at: www.facebook.com/help/contact.php?show_form=username_rights
There are a few unanswered questions about this form:
(1) Will I receive an email confirmation of my submission (I did not receive one although I submitted the form about 20 minutes ago)?
(2) Will I receive confirmation that my request has been processed/accepted?
(3) Will my company be able to use the reserved username for our own company’s official product page on Facebook?
(4) Can non-Facebook users utilize this form to prevent registration of a trademark as a username?
(5) Will company product pages be able to register for usernames as well?
(6) Is there a limit to the number of trademarks that can be reserved (the form only allows for the entry of one mark/reg. no.)?
(7) Can a trademark registration entered in the form be for any jurisdiction (including ones which may not be easily identified online?)
(8) What will happen in the event that multiple parties reserve/attempt to use the same trademark term?
Some credit is due to Facebook for establishing this trademark reservation system, however in light of the impending deadline, trademark holders need to reserve their marks ASAP.
Good luck,
Owen
My Blog 
It's good that facebook has taken the initiative to protect trademark of companies. Normal user will not be able to identify the same or may not even know what he is using as user name. That's another feature that makes it one of the best social networking sites.