if you are interested in the technical side, watch this video. It explains it. Also I can assure, this is not a scam. If it were a scam then the hundreds of business and trading sites that formed around it would have never started. Likewise, the source code is openly available and can be verified by everyone. If this were a scam, then someone would have noticed in the code and made a big deal about it. That has never happened.
http://www.youtube.com/watch?v=FTOhti7wxXkwell that's interesting, but they should re-do the video with actual voice overs instead of robots