i Suppose it's something that a non-technical minded person would get used too. With computers, your always dealing with code and programs, you have no idea what's in the .exe file. Even if you have the source code for a program, the chances are, they would not be able to spot a virus or whatever. This is where Anti-Virus programs, and intelligent warning systems come in, so the non-technical user doesn't have to be deprived of trying out scripts/programs. Sockets and COM, and maybe file manipulation should really be added to the disableable commands... The average popup-sharing newbie doesn't need the risk.
