[silisili]

Unsure about the talk, but I read a research report from someone at I think it was Cisco who purchased a second level tld of a bitsquatted US state( think statenXX.us instead of state.XX.us ). The amount of email they received was staggering, and I'd have trouble believing that many people would make that mistake in typing.

[runnerup]

that's more "typo-squatting" than "bit squatting" but its definitely the same broad concept.