Last night I did a talk at DevEvening giving an overview of some of the new and fun things in HTML5 (and associated specs). It was a little on the short side, but as promised I have uploaded the slides and all the links (which the projector rendered pretty much unreadable) here.

Recently I was looking into making HTML 5 a little smaller. I found that not only can you make all the usual tweaks to save space such as removing any instances of div overload and keeping class names and IDs small, you can actually remove entire chunks of HTML which isn't technically required.