Anonymous comments

[infomage27]

Sometimes, I want to let the person know why they got a thumbs-down, to help them get fewer of them in the future.

However, in every single instance, telling them outright or leaving them a comment or message will guarantee me a thumbs-down in return.

Would be nice to be able to leave anonymous messages for people, so they know why they're getting flagged but not by whom.

[Rudolf]

bad idea.
You assume what you have to say or not.
I think it's better to know who gives you a thumb (even it's not currently done)
Sometimes you receive a thumb down only because you lose (some players are like that, I thnink they use this as marker to see if they already won against you...)...

[pikiou]

I'm afraid trying to change someone while giving a thumb down is always doomed to failure.
Either skip evaluation and talk about what bothered you, or sanction an obviously bad behavior with a thumb down and move on?