By default, once Facebook Pages are created, they’re given a code in the URL to stand in as a vanity URL – or in Facebook-speak, a “Username”. Well, it’s best if you change that URL into something that’s easy to remember – like a bunch of words that actually mean something.
So choose, peeps. Go for branding or search engine relevance.
In any case, here’s a little video that shows you how to do that. Check it out: