Its a self feedback loop which is increasing CanaryInTheMine's trust rating.
For instance, redsn0w sent a positive rating today
CanaryInTheMine 150: -0 / +331(331) 2014-12-13 0.00000000
I trust CanaryInTheMine , he is an honest an reputable user!
CanaryInTheMine added redsn0w to his list which resulted in another trusted feedback for him. I think this is a flaw in the trust system which leads one level 1 member to improve his trust rating.
I think this is clear trust padding on CanaryInTheMine's part. I have always had reservations about redsn0w, but would not go as far as to say he is planning any kind of long con, but would also probably take his trust reports with some level of a grain of salt. I don't think it is appropriate for him to be on default trust.
If he wants to make a scam report then he can open a scam accusation, like I am sure he knows how to properly do. IMO this really should be the way to stop a scam in it's tracks as it is a way to give much more evidence and public discussion about a potential scam