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 the three times activity be increased maybe with the rank?
Some people are near to the cap
https://bpip.org/r/trustsent.aspx