Sorry to update this thread, but I have some remarks about sprays:
1. Sometimes it happens that a spray does not paste itself on the wall, but rather behind it. When I inspect the spray, it reads it correctly, but I can't see it. 2. Sprays overlap eachother. How is it that one spray is more upfront than the other? It happens both with my spray, sometimes it sticks on top of another, sometimes it's behind it.
Unfortunately the way that the source engine deals with sprays means that they stop being "tracked" after a while, so TC's plugin can't always locate them to be reported. If that happens, it's best to let an admin know that there is a dodgy spray using the "@" message system.