If you can't make it down to the Expo you can still participate virtually. The Twitter hash tag is #cginnovate. Simply plug that into Twitter Search and it will show you everyone that is Tweeting from the event. Use the same hash tag for Flickr and YouTube to see what else is going on at the Expo.
You can also see the presentations in real time on Ustream.
If you're in Tampa, Amver is in booth 911. See you there!