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When creating a Facebook fan page, it is assigned a long URL containing a unique ID number. What prerequisites and steps are required to get a Facebook fan page vanity / custom URL?
There is a guide to doing that here.
Essentially just go to http://www.facebook.com/username/ and click "Set a username for your pages" where you will be prompted with options to set up a custom URL for any of your pages.
Required, but never shown