i put this up to see what others think to this, not just i think its a waste of time.
i think that asking questions about if anyone saw it and clean it off is fair play but as for forensics coming in to it i thought was "over the top". thats why i put a ? after my title "bit over the top?" not titled what a waste of time i think having forensics for graffiti personally is. thats my view on it.