And while we're on social networking sites...

...US-based business social networking site ZeroDegrees uses a pretty broad definition for City. English users are offered in excess of 2000 options in the city select field when registering, including the well-known cities of Abbess Roding, Baker St, Buckingham Palace, Charnock Richard, Cold Norton, Donkey Town, Fiddlers Hamlet, Good Easter, Hertfordshire, Houses of Parliament, Matching Tye, Port Sunlight, Snodland, Stainland, Summer Bridge, Thong, Turton Bottoms, Up Holland and Water.