Oooh, I tried that, it does not make the experience better (at least in Fennec on my Android): the main column gets squeezed until it only shows one word at a time. I think I'd have to drag my websites CSS into the 21th century before I can use that.
Ah, that's too bad. You can use two CSS selectors to make the two columns go under then main one on small screens, though it's a bit more involved than I can remember off the top of my head.
