Gaming, verification, blockchain. Tech Crunch, May 2017, re: Userfeeds (Warsaw) company:

The system of content ranking and discovery on the web using links, likes, upvotes etc. is broken because algorithms are gamed by third parties (such as bots and false news providers) to change what you see on social media. That has meant platforms like Facebook ranking fake news higher than real news because it is, for instance, more sensational than boring and complex reality. We all know where that led…