I decided to create this topic when I saw all of those threads that die after a couple of days, just showing a site/game/video. So to keep things organized, please post all good links in here. Some articles or educational websites are also welcome. If you have an interesting link to share and you want to start a discussion about it in a topic, that's fine. However, if you're just going to post the link/image/video/whatever, use this topic. TLDR: Post, share, discuss.