I'm proposing the idea of preventing users from rating anyone unless they have a certain amount of posts (maybe 10-20).

The reason? There has been several times where a student has posted his or her homework and basically asked us to do it for them. There has been several occasions when I have gotten a bad rating because they didn't like the fact that I wouldn't do there homework for them and one person even tried to call me the F word in one of their disapproval ratings. I didn't do anything wrong, just told them we wouldn't do their homework and they needed to post the code that they have done so we can give them pointers.

So, good idea or bad idea?