Almost all of the HTML features in HTML5 are boring and barely useful. The rest, basically, <video> and <audio> are crippled. The useful parts of HTML5 are the

Almost all of the HTML features in HTML5 are boring and barely useful. The rest, basically, <video> and <audio> are crippled. The useful parts of HTML5 are the new JavaScript APIs (which arguably don't really belong). Unfortunately many important ones are missing, and of the ones which are present many are incomplete or broken.