YouTube Link Title does a few things. First and foremost, it replaces every YouTube link you see (such as
www.youtube.com/watch?v=KT--CsBh5TM with the actual title of the video (such as Know Your Meme: The Rickroll). If the link text isn’t the YouTube URL, you can see the video title and a thumbnail by mousing over the link. It’ll even cross out links for videos that are blocked in your country, so you don’t have to waste time clicking on them. And, lastly, clicking on that link will open it up on the same page, embedding it instead of making you load YouTube in a new tab. Of course, if you prefer to load YouTube in a new tab, you can always Ctrl+click or Middle click to do so.