I was going to ask, "What about those without JavaScript or that have it disabled?" but who cares about them. 99% of the world has JavaScript probably!
Doesn't this defeat the main purpose, though? At least on that page, the fall-back was just in the mail[aht]whatever format, which I suspect spammers have learned to decipher long ago.
I wondered that too. But apparently not, because we've got the proof: our spam has gone way down. Though if it goes up again I'll bot-proof that fall-back page a bit more.
