But if you actually want to secure your unique name, you gotta be quick, because:
Starting at 12:01 a.m. EDT on Saturday, June 13, you'll be able to choose a username on a first-come, first-serve basis for your profile and the Facebook Pages that you administer by visiting www.facebook.com/username/. You'll also see a notice on your home page with instructions for obtaining your username at that time.
That's what the official blog says – and what's even more important: once you chose your unique username, it's here to stay – no change of mind later on. And it's first come, first serve – so be quick! Read more