http://apps.facebook.com/mapyourmates/is a neat Facebook utility from
Cross Country Trains.
It plots any UK Facebook friends on a Google map, and *tells you the
nearest station. Curiously, it suggests Uxbridge Vine Street as the
nearest station for a few of my friends.

I presume the use of the word "neat" is not intended to convey irony
or sarcasm - this really would win a prize for the worlds most useless
utility.