Oh, sorry. This topic has been discussed over and over again by several members of the community for a long time now, so you tend to forget not all are educated on this topic. The current issue is that passive vote selling is the most profitable thing to do here, so we need to increase in any possible way an active involvement. Increasing curation rewards and adding a seperate downvote pool has been suggested for year or two now by the community, I think those are first good steps towards better situation. With these additions we'll see more curators and they'll be pushing good content up and bringing bad content to where they belong, making buying content to top not so profitable. I've probably seen and forgotten many other good solutions also... It's been a long time. Finally it's nice to see that the Steemit Inc is ready to acknowledge the problem, or to say it out loud rather.