This could actually be a viral hit. 1> After uploading all sides of a greeting card, use some animation/visualization that will allow you to interact with a si

This could actually be a viral hit. 1> After uploading all sides of a greeting card, use some animation/visualization that will allow you to interact with a single card by clicking/swiping. 2> Allow this to be embedded into FB/Twitter 3> Make the service free - the most likely monetisation will be advertising, so it's all about MAU