Stack Overflow and Hacker News are portals mainly (but not only) read and used by programmers and other people who occupy their (professional or free) time with writing code. Stack Overflow lets their users easily Stack Overflow (SO), an established in 2008 portal on which programmers help each other by asking and answering coding questions, lets their users easily find questions related to a certain programming language/framework/library etc. by tags. The questions and replies/comments are evaluated in a form of points so it is usually instantly obvious which answer was rated the highest (and therefore is considered as the best one by the community) or whether a described problem is reproducible, i.e. you can replicate it with a piece of code prepared by a person asking a question.