I have been on many forums, however this is the first with a trust system for me. How does it work? Is anyone checking the validity of the trust entries?
It's pretty basic.
The forum admin chooses people he trusts. They make up level 1.
Those people choose people they trust. They make up level 2.
Trust from people on level 1 and 2 will show up by default on your trust rating. Trust from other people will not.