Tatchup allows you to add comments right on top of videos and web and mobile sites. Everyone who shares the extension can see these comments and write their own. Have fun meme making with Tatchup or use it to set the record straight if you find false information on the web. You can use it to share ideas in a collaboration. Use it to respond to any and every kind of video. Facebook, Twitter and Instagram integration will post messages automatically for you when 'tatting' directly on provocative online content. This will save you time AND increase your audience.
This is one of the most useful Chrome extensions you'll ever find.