"Theoretically I could create a script that generates the same data but refers to users by some obscure coded number so that it wouldn't be possible to determine who scores who, but someone could bring attention to a specific coded number (which would refer to a specific user) as an example of someone that is abusing the system."

This wouldn't be sufficient to satisfy the paranoid. You'll need to publish names, addresses and phone numbers so that members can exact suitable revenge on those who tarnish their spotless reputation for fact and accuracy.