Deference to Presenters & Barcamps

Now that I have recovered, more or less, from RE Barcamp Philadelphia (great job, by the way, Bill Lublin, Kim Wood, John Lauber, and the rest of the REBC PHL gang!), I wanted to ask a question:

Are presenters at conferences owed any sort of deference by attendees?

I also present at various events and have come to realize after Philly why it is that I t…