When you sign up for a Facebook account, Facebook assigns your profile with an ID number. Facebook will also prompt you to create your own custom user name, which will display on your Facebook page as ...

When Facebook was founded, every user was given an ID number. It began with ID #0, which redirects every user to their own profile page. ID numbers 1-3 were tests that Mark Zuckerberg used to ...

Rather, as a 2011 story on the "Today" show’s website explains, the series instructs Facebook to convert the number to its corresponding Facebook page identification number. Mark Zuckerberg’s Facebook ...

If you look at your Facebook profile page (and you didn't opt to change the url to your name a few years back), the url is probably followed by a long string of ...