Stack Exchange did an amazing job of building up a high quality repository of questions and answers by providing tools that allowed a community of dedicated people to curate this body of knowledge and working in co-operation with the community to build this fantastic resource. Unfortunately, over the past number of years, the interests of the corporation (user growth at the expense of else, apparently) have diverged from that of the community (maintain high quality). See https://dearstackexchange.com/