Must-Read: Genius: Annotate the World: "Genius lets you add line-by-line annotations... any page on the Internet. Put in front of any URL (or install our Chrome extension or our bookmarklet) to activate Genius annotations. Try it on an article, blog post, or a Wikipedia page. Highlight any text. Explain why it’s important, cool, or wack. Add an image or a YouTube link. Read and reply to other people’s annotations. Share the Genius URL to show the world what you think. (The more people that upvote your annotations, the more Genius IQ you’ll rack up!)