Bread and Butter in the Sewer - Diaroogle!

'Diaroogle helps you find quality public toilets from your mobile phone.
It's for the discerning, on-the-go defecator who is brave enough to use a public bathroom, but still demands a hygienic and private bathroom experience. It is also a community authored database of New York'

The site is in it's infancy but all in all, a pretty "solid" idea... ba dump bump ching!