I am the admin of a website where we have a place where our users can post custom content and rate the content of others.
We have discussed how it works and should work many times and came to the conclusion that we’d never want it to be public. Any report of abuse will be checked by the website owner directly in the database and even admins don’t have full access. Everybody tries to stay as far away from the personal ratings as possible.
We also noticed that it would be a lot more fragile when there are not many voters. A whole group that is negative about something wouldn’t get as much harassment as a single person having a unique opinion.
On our website we have a comment section that isn’t anonymous, and we even noticed that people often don’t post something negative when it would be obvious that they are the only one who has voted/rated something. (“Negative” is almost always constructive in our case)
These are just a few things that I think add to this discussion.