You HTML5 and CSS3 coders are really ahead of the curve right now, so you can probably answer this better than most. I primarily use wordpress for just about every site that I build and I'm not a strong coder by any means. I'm seeing HTML5 and CSS3 more and more in the themes that I use. Do you think that I should bite the bullet and start learning & using HTML5 and CSS3 now? Should I jump on it, like, yesterday? Or wait for it to become more widely used? (I'm trying to hold out like Internet Explorer ).