I think it would be reasonable to copy the letter into reviews of his shop on yell.com , mytown.com and places like that. Fact is he put it out there, he wants to be seen like that, why not help him out?
After having a quick look around, complaining about thier driving will only dilute the complaints about them!
After having a quick look around, complaining about thier driving will only dilute the complaints about them!