Most of these "cheats" are lag-related. Or simple bugs and program maladies that need to be fixed (or simply ignored). The one that comes to mind right away is the "building under attack" warning, which doesn't work 75\% of the time.

BUT, I believe there is a modification out there for the Stealth BH that makes him as easy to see as the Sun itself. Its very disappointing to see people finding ways to cheat already.