Well they probably would be familiar with them and just test them. I don't know how many there are for AS, more exist for PHP and things like that, problem is that AS is already protected inside of the SWF, but once they get inside there is little to do.
My thoughts have always been to code boldly, and if they steal it you are more likely to benefit from putting a notice in your code comments asking for them to tell you.
jeremy - gnomeontherun
Educated questions often get educated answers, and simple questions often get simple answers.