Robin Good: If you are looking for a tool or service that would allow you to sync up the video of you speaking at an event with the slides that were being projected, into a seamsless, web-shareable presentation, I have put together this small collection of ten tools designed just for this.
I have noted for each one whether there is a free account and how much does it cost the lowest "pro" version.
Tools to synchronize your slides to your speaker video: http://pinterest.com/robingood/synchronize-slides-with-speaker-video-best-tools/
[Really good list of tools - JD]
Via Robin Good