It's smart to go public with this. There is established research in this area and a trove of algorithms for measuring trust. Even if it's as simple as lowering

It's smart to go public with this. There is established research in this area and a trove of algorithms for measuring trust. Even if it's as simple as lowering a user's trust ranking after false reports - when applied across a dataset as large as FB's it's going to be somewhat accurate. The article goes on to suggest this is just one of a range of heuristics use to determine trustworthiness. I can imagine all kinds of profile interactions that would be be good indicators of this.