I guess you just gotta be honest. Give them your opinion. People should like stuff because it's appealing to them and not just because there's money involved, but people like money too & I guess that's the truth about the world that is showing here as well. You can check google images to see if people have just copy pasted, you can copy & paste their words into google to see if they haven't just copied & pasted something into steemit, things like that. It's really up to the people to keep the trash out in the end but to do so in a reasonable manner. It's interesting seeing where it's going at the moment. Maybe the devs and whales are keeping an eye out on the social content and seeing if people on a large scale can work together to push good ideas ahead. Maybe they're seeing what generally trends with people at the moment... Could be some social experiment :P Either way, the ability to just start writing something to this and earning money straight away is a real privilege.