knowem.com
You may (or may not) already have a Google+ Vanity URL!
At KnowEm we've been trying for a while now to see if Google has opened up a way for anyone to grab a vanity URL from Google+. After searching around Google and some other blogs and publications this morning it appears that you cannot claim a vanity URL just yet; however, if you had selected a vanity URL for your old Google Profile those have been grandfathered in to point to your current Google+ profile (here is an example of my own: http://www.google.com/profiles/streko).