OK, new limits:
- You can't give more than 5 ratings to a single user.
- Your total sent ratings is limited to three times your activity, but at least 1.
- The comment length is limited to 600 characters, but each newline counts as 120 characters.
Can "Edit" option also given in trust feedback. Currently it is only "Delete". If something got missed then no need to delete and rewrite again, just edit it.