From Dave Winer:

I thought I'd offer sponsorship opportunities to people or companies who would like to be talked about, briefly, from my speaking space. I can't guarantee what I'll say about you or your company, but I do promise to mention you, and will thank you for picking up my travel expenses for the New York trip.

Very tempting, Dave.  I'll talk to our marketing guy here.  How does one get priority placement?  Can you guarantee a number of mentions?  Is this a cross platform buy in combination with a blog post?  What's the expected response rate?  What's your refund policy?  Will you be handing anything out to attendees that I could attach my brand to? 

Just kidding...well, not about priority placement ;)