Reddit is quite the experience whether you've been on the site for minutes, days, or years. Despite the amount of posts, reddit still manages to have the best user content on the Internet.
Through their clarity on complex subjects, Scientific American has earned its high status and become a valuable resource for everyone from students to scientists. Now, with their side project WhaleFM, Scientific American might just be the best science website for whales.
Big Think is what happens when you put television producer Gary David Goldberg and former Harvard University President Lawrence Summers together. The pair envisioned their website becoming a YouTube for intellectuals. However, it became much more. The emphasis on quality content makes Big Think the best philosophy website.