We've had this discussion in the past. Although I do have sympathies withe the idea of posting car reg numbers as warnings and the like, PLEASE do not do this on the public board. What we would end up with is a backlash, and I for one would not like to see my personal details on here as a "revenge" tactic by some nutter or other. Certainly do not publish pictures of suspected offenders, that is just asking for trouble.
The official answer from Swinging Heaven has always been DO NOT DO THIS. It is not an issue open to debate, we will delete any personal details about people from the public board. If you want to give such details out by PM, that is totally up to you for course.