Speech attribute in Chromium
Back in May 2010 Chromium (including Google Chrome) introduced a new API for speech recognition, via the speech attribute. By adding it to form elements you can capture audio (well, speech), as if someone had typed it into the form element. This can be a very useful accessibility feature – if it gets added to the official HTML5 specs.
I created a simple demo here (a twitter search):
Only works in Chrome/Chromium, obviously.
You can read the full proposed specs here.