Keygen What Are The Major Consequences For Using A Keygen On A Product For Example Adobe After Effects CS3?

What are the major consequences for using a keygen on a product for example Adobe After Effects CS3? - keygen

My friends and I want to make films and want to do better. A friend told us, free episodes, which could get our movies better. But before you all that I need to know what are the main consequences of the use of a keygen for this type of product?