Update: The promotion is now over. Congrats to the winners!
We're doing a promotion over at JavaRanch this week (Tuesday through Friday, i.e. July 16-19): Ask me a question about my ebook, Presenting for Geeks, or pretty much any other question related to presentations and presenting. I'll try to answer them all - and you'll get a chance to win a copy of the ebook.
I've linked to some of the more interesting discussions below. You can read them all over at the JavaRanch forum: