Doesn't hurt to edit a script and add stuff to learn what will work and wont. Sometimes that's the only way to learn basic scripting for people that can't find a stable scripting room. Most scripters that own mIRC scripting rooms are to busy writing their own scripts or get tired of seeing the same nick all the time asking questions on what will work in a script and wont for what they are doing. As far as ripping a script, that's messed up but there are people that do that unfortunately.

So hang in there and keep learning any way that helps you. The only way a script couldn't be ripped would be not to post it ever online and use personally on ones own mIRC. But that defeats the purpose of sharing... doesn't it.