What is a vanity URL for Facebook? It’s a short URL that looks like such: facebook.com/yourvanity. It is pretty self-evident why you would want one, mainly it is easier to remember then the one given to you by default. Also such shortcuts will rank better in search engines such as Google, let alone people can find you through Facebook.
One thing that you do need to do before getting a vanity URL is to get 25 fans to your Facebook page. To do this Facebook is nudging you to be proactive and upload your contacts to them. If your contacts have a Facebook page already, they can fan you easily enough. If they don’t then they might feel compelled to sign up for an account which helps Facebook.
Hopefully in the long run it will be a useful tool to promote your services and keep in touch with your client base. In the meantime get working for Facebook and get that vanity URL, this may be your last chance to lock in a good one.