I think if we do something similar to blind. One review per company email address it guarantees that each review is from one anonymous person in the company. This prevents smear campaigns and ensures that you get a clear and accurate picture of someone.

It would be bought and killed by the capital system just like Glassdoor was.

I used it. It was accurate though. The website attempted to serve two purposes. To warn potential students and to allow the professors to be more self aware.

It failed on the second purpose, but at least it helped me avoid or anticipate a hard or incompetent professor.