When I was in college I thought the concept of it was pretty ridiculous, as was the idea of writing a book about how to be an MC (which KRS-One was talking about at the time). However, senior year the course popped up, and some people I respected as MCs and hip-hoppers in gneral ended up taking it and saying it was well enough done.

So I guess it really depends on the teacher. It's just too often, he/she is a cornball, and that's where we get the negative association.