I am a marketing consultant who has a strategy for a client that includes building a very simple site that allows people to upload photos of their cat and text to create an online ebook which then becomes viral when they invite friends to see their ebook. Their cat-loving friends like the ebook, want to create their own ebook, refer more friends and it keeps growing. The business goal is to build a large email list of people interested in cats who may also be interested in purchasing my...