On his blog [Hidde De Vries] recaps a talk by Sir Tim Berners-Lee, the inventor of the web, on redecentralising the web.

However, if we’re not careful, Berners-Lee warned, there can also be a vicious circle, a dystopian scenario. This happens when algorithms cause people to meet more people like themselves, narrows down their circle and alienates them from people who are different. Or when websites are used to harvest people’s personal data that are then used for political gain.