Right. I think anybody reading comments in these review sites can see if students are ranking professors well for being "easy" or if they're ranking them well f

Right. I think anybody reading comments in these review sites can see if students are ranking professors well for being "easy" or if they're ranking them well for being great educators. The universities I went to for my undergrad and graduate programs both had an informal rating system for professors and I definitely encountered some of both. One of the most highly rated professors I encountered was also one of the best educators at the school. He had a reputation as being a brutally hard grader. But most of the students who left his classes with some bruises and (what would have been in any other class) a mediocre grade, ached to take more from him because you felt the immense value of his teaching. I had other professors who taught poorly, tolerated cheating, or gave non-sequitur exams on material they never covered and so on. There was absolutely no recourse or way of providing feedback on these professors and even ones who received universally poor reviews at the end of the semester stayed on and even attained tenure in some cases. The only real recourse was for students to rank professors amongst themselves and simply starve out poor professors with lack of registrations. That's the only signal universities seem to respond to.