I’ve blogged on this before, here and here, and ended up chatting about it on Twitter (see, I do use it sometimes) and Adam Machanic asked about a poll to gauge the interest, so I’ve launched one at http://twtpoll.com/3×3fq4. Hope you’ll vote!
Don’t know if we can afford one, find one, agree on one – but I still think it would be a marketing coup to bring in a top tier speaker for one of the keynotes.