As I scrolled through this, using my mouse to click the heart on a number of the tweets, I really understood the point he makes about actions that don't need to

As I scrolled through this, using my mouse to click the heart on a number of the tweets, I really understood the point he makes about actions that don't need to use a mouse. When I program in vim and run things on the command line, I don't use my mouse. Even when I browse Reddit, I don't (often) use my mouse because of the RES extension, which lets me browse with keyboard shortcuts. I haven't really thought about how much easier things generally are when I'm not using my mouse, and I wish there were a similar extension for other websites. Does such an extension exist for Twitter, or for HN?