My friend and I were in need of a ride and a sranger offered one.

We are vacationing in New Orleans and eating our way through 
an african american neighborhood. We asked someone where the 
bus line ended up and they answered, "the projects". We 
decided to walk to the French Quarter when the person offered
to drive us. We took the risk and as it turned out the person
was the one who wrote the guide book we were using and was 
road testing it. We loved the homey restaurant the book had 
suggesed. We had tons of stuff in common and the exchange was
remarkably enriching. That risk paid off in SPADES. My friend
plans on keeping in touch with him as they share the same
unique hobbies and interests. 
We all risk a little in accepting eachother, but without it we
are all alone.