I recently bought a used Civic and took it to an alignment shop. When the front wheels were set to 0 toe they both showed a value of +0,30 degrees in camber. The car and its suspension doesn't show any damage or wear at all, and the recommended values were between +0,14 and +0,54, so it wass pretty much right in the middle. I don't remember what were the values for the rear wheels, though.
My question is: Why would the car have a positive camber value? From my little knowledge of the subject I can't think of any significant benefit.