oh its so easy once you break through the fear and then it becomes addictive. 215 strangers and counting! there is a Flickr group dedicated to the project. check it out it's called 100 strangers.
You can also read interviews of some of the photogs who have been doing it for a while.
Aw yes, I stumbled across it while ago, just thought at first that you have similar style. Great project really, very inspiring! Always wondering how many interesting people we just pass by every day, not paying any attention to them.