If these sites just go for some verification before promoting these scams, it would be very good for the visitors.
This is the reality, because people know how much money in the cryptocurrency ofcourse a lot of people will do shady things to have a part of it.
The sad truth is in advertising industry as long as they are paid enough to advertise a project they will advertise it event it turns out into a scam.
Maybe what to be my question is, how define ICO to be scam project if there are no evidence that ICO will take out people's money. Maybe that advertising sites already have their standar about which project that can use their services. But at the end, even bounty hunters sometime don't know if the project campaign that they already joined turn to scam or maybe not have value in market.