I'm surprised by the format of the video presentation that @knircky gave in Philadelphia. I couldn't listen to what he was saying, which is primary, because he was relegated to a corner in the bottom right side of the screen. WTH! What on earth was the purpose of that? So, I can't comment on this because the format was so off-putting I couldn't focus. Mind you, Deb says I probably have elements of ADHD, but if I may make a suggestion - Don't do this in your talk. Don't let A/V aids overpower what you have to say. I learned these lessons from long years of trying to teach unwilling minds so you can take my advice to the bank... ha ha. Be confident in your words, speak with authority and don't hide behind an A/V presentation