Facebook vanity url’s

Facebook now do vanity url’s so you don’t have to give out a horrendously long name. Now you can give out something like http://facebook.com/helsby for me. I tried andy and andyh but they are only accepting names with more than 5 characters. You can’t change, swap or sell the address once it has been assigned to you, but you can get your own by going to http://www.facebook.com/username/.
Well worth doing to make it easier for people to find you.