I know for the stage I ran at Agile 2012 we looked for things like: * videos of speaking * links to existing decks * feedback on talks from twitter, speakerr

I know for the stage I ran at Agile 2012 we looked for things like: * videos of speaking * links to existing decks * feedback on talks from twitter, speakerrate, etc. If we couldn't get any of that I sometimes asked for a few minutes of video of them just pitching their talk idea. I know other stages at Agile 2012 did that to. The "video snippet" idea is one I've seen a few places. The folk who organise IxDA's Interaction conference have done it the last few years for example.