I would like to back you up on this and from a guy whose offering micro loans here: https://bitcointalk.org/index.php?topic=1197530
as proof I uploaded the picture where in he first sent the money which it turned out double spend and after promising to send me again which for a fact he never did and haven't yet payed majority of people that signed up under him, so if someone on default trust could leave him a negative rating it could help people not trusting this member as clearly he is scammer