Thinking About Speaking at Ad:Tech in Seattle

A colleague e-mailed me about possibly speaking at the ad:tech one-day session when it comes to Seattle next Spring. Their speaker proposal form is a bit daunting, but I'm considering it. Anyone have any experience with speaking at ad:tech, I know Mike Grehan does it but I think he's a fairly infrequent visitor here at SEOmoz (aren't you Mike? ).

If you have some advice about whether it's worth doing, drop me a line. I generally like to present at a fairly high level, and would hesitate to give an "intro to SEO" speech if that's the type of crowd I'd be facing.