If you are not attending, browse through the pictures... If you are at the event, you can upload images to this stream from your iPhone, Android and Windows Phone handsets. Just get the client app from their LiveShare download page and make sure you select the correct stream "HP Discover 2011 Las Vegas (Public)".
Other related posts:
A HP Discover blog index
Cash for clunkers at HP Discover 2011
The Official HP Discover blog