Well I do believe that we should always take a look not just about how the campaign is being managed, but also about the project itself. When you join a campaign you are not just getting some coins for renting your sig space. You are actually advertising and supporting that campaign, and you must understand that it is your responsibility to choose what you will advertise. If users did that more often, then we would get less and less scammers out there.
I'm sure trusted managers do this as well, so the probability of advertising a scam campaign decreases a lot if you only apply to campaigns run by trusted managers, but you should also do your work as well. And when renting your sig, you work is not just posting. I strongly believe you need to know what you are advertising. I mean if you don't, you can't even do a good job, because you can't advertise a campaign if you know nothing about the project behind it.
I absolutely agree with you. There are too many ICOs and other different projects right now. All of them want to advertise themselves. But they also very often turns out to be a scam. We need to read about the project and understand its purpose, if we want to participate in a signature or bounty campaigns, first of all, to protect ourrself. And of course, this must be done, to protect others from fraudulent projects. I do not always know whether it's a true or scam project, so I look at the profiles of those who participate in it. But if the honored participants of the forum advertise scam projects, the newcomers will look at them and they will participate in such projects too. I believe that we should fight together against such scam projects.