One of the main things I’m doing with CSS is masking images into the keyword text and using Google Web Fonts instead of the now deceased @font-face.
Here’s what I’ve done so far with the two things.
The glittery “love” text is actually animated! The glitter sparkles! Hooray! I’m pretty excited about what CSS3 can do. At the moment, I’m still working on keyword styles. I’ll be tackling full-on tweet animations soon.