in reply to Restricting access to cgi source

How about including a statement in your code as Larry Wall suggests? Something like.
Perl is the copyright of Larry Wall. This program is the artistic work + of Mischief Mayhem and while Larry and the authors of all the other +modules that my application uses don't mind me making money from it, +I am scared of the idea that you will steal my work, so don't. Copyright "Some Scared Dude, Inc." 2003
Or, you could just code like me... hell anyone that tries to use my stuff would just end up scratching his head anyhoo...