I am travelling a lot for business and was very often really screwed when I had no chance to have a local by my side to get to the places I needed.
I was once in Instanbul and could not even speak out the name of the street I wanted to go to and the company I was heading for was not known by the taxi driver. Of course you find always a way around the language issues, but when I once was in Kairo I got an offer by a limo driver, who told me for 100 USD he would show me the Pyramids and drive me around. It was for sure worth the 100 USDs and I thought it would be great if I could go somewhere on the web and "book" services directly from a local.
So am not sure if that would be a success and therefore I would be interested in your opinion - what is your experience with local services? And would you pay for it?