I programmed a fake FlowerGuesser for the lulz. Here's a video of me "using" it: http://www.youtube.com/watch?v=DrEn7oK_NfU

I can send you the files for you to put it on your server/webhost, host it for you, and set it up to do anything you'd like. I could put together a better video for you to demonstrate with. It'd be very easy to get people to use it. At the end, for example, I could say "PM me if you'd like a link / would like to be a beta tester / developer." Whatever. PM me if you're interested, we'll work this out.