To be honest there was few signature campaigns that want promote "double - bitcoin" websites.. i other words SCAMS. Finally this practise was squashed'.
It is true, that the only one active signature campaign that was/is accepting "red trust" members is Komodo:
[...]
Actually we also accept accounts with negative trust. It's a really simple campaign. Everyone is welcome to join in and promote Komodo!
But to be accepted someone with 'red trust' have to wait for moment when participant will be kicked out, because officially campaign is full.