Keenston uses the so-called freemium model, which means that some functionality is free and some features are only available if you pay. You can participate (comment, react) in all the debates, discussions or take quizzes as much as you want, but in order to create your own debates, communities or blog posts, you have to buy premium membership. But why don’t we allow everyone to use all the features free of charge because most websites work like this?  The reason is: we do not serve ads to our users AT ALL. Those “free” websites are not as free as one might think… These websites earn money by selling the data about their users to advertisers. The more users they have the more they can earn f