If one day I get to the US of A, this website might prove useful. The title alone makes me want to read it, guess that's clever.
Not for Tourists is the local guide to mostly American cities but they are starting to slowly covering others like Paris and London. It is like Virtual Tourist and Tripadvisor in that you can submit your reviews but this looks a lot more chic and user friendly.
I mean it is not everyday that you get to narrow your search to bagel joints, farmers markets ( for london ) , donuts and 24 hour private investigators ?! ( new york ) do you?