Report it to Facebook

Facebook tells you what to do in such situations.

If you think this could be a case that the other user wants to misrepresent himself, or impersonate you, simply fill out the following form and let Facebook know about that.

http://www.facebook.com/help/contact.php?show_form=report_fake_profile

If the photo is yours and you think this could be considered copyright infringement you should report them with completing the following form:

http://www.facebook.com/copyright.php?notify=1

You may submit your Notification of Alleged Copyright Infringement using our automated form, or send it to our Designated Agent by fax, mail, or E-Mail as set forth below:

Facebook Designated Copyright Agent

Facebook, Inc.

156 University Avenue, Suite 3 ... Read more »