Marketing is going to be a huge challenge. For a data point, consider that TinyPrints (which owns Wedding Paper Divas), spent nearly $50 acquiring new users la

Marketing is going to be a huge challenge. For a data point, consider that TinyPrints (which owns Wedding Paper Divas), spent nearly $50 acquiring new users last holiday season (http://www.nytimes.com/2009/12/22/technology/internet/22search.html http://www.nytimes.com/2009/12/22/technology/internet/22sear...). Granted this was for holiday cards, but I would imagine that for wedding invitations, the spend for new user acquisition is still going to be quite high.