The ALAC's John Levine, writing on the NANOG list: "I see two reasons that it's a waste of time to worry about homographs. One is that there's so many approximate homographs even in 'simple' languages like English (O and 0, I and l and 1, etc.) that you can't possibly strike them all. The other is that even if you rule out all variants of, say, citibank.com, you're still going to have names like citibank-account.com (which is not Citibank) and cyota.net (which isn't Citibank either, but runs Verified by Visa mail on behalf of lots of real banks.)"

Here's a real world example: www.lcann.org (or www.lCANN.org, if you prefer). .