Kills the notion of the semantic web, which kills SEO for your site, but would kill search in general (pending a huge rethink about how search works on the web)

Kills the notion of the semantic web, which kills SEO for your site, but would kill search in general (pending a huge rethink about how search works on the web) if everyone would do it. Not accessible for anyone with accessibility options. Probably not going to work well, if at all, for people with JS disabled. More error-prone, imo. I've had HTML5 canvas projects in the wild for over 1 year working fine, until Chrome updated its browser and it started producing errors for one particular deprecated function. You obviously can build web apps to continue working, but mine didn't out of the box. If you write websites in HTML the chance that your entire website stops loading and working completely due to one issue is extremely small. Beyond that canvas takes a bit more resources which is an issue for mobile. My canvas projects also always sucked up quite a bit of battery somehow on mobile. Lastly, there aren't any huge benefits imo. HTML5 & Canvas are awesome, they have their place, but atm more like Flash: Games, (interactive) Advertising banners, complex animations to create a brand experience etc. But for an actual website? If you can't do it with CSS animations it's probably way too annoying, for example while this website is 'nice', I don't like it. I'd hate to have more websites like this, the animations just get annoying. Animations aren't there to be fancy, they're there to be intuitive. If you have a drop down menu, it may drop down, not because it's fancy but because you understand that it origins from a certain click on an element, and the menu's options are contextually associated with that element. Which is why a slide in or fade in animation would make no sense, it's animating for animation's sake.