Freemium is the dominant model among online games for a reason. Dropbox is another example. Anything addictive that has the potential of hooking a customer long

Freemium is the dominant model among online games for a reason. Dropbox is another example. Anything addictive that has the potential of hooking a customer long term. Noone is going to shelve out until they've put x amount of hours into it. Christmas cards is the worst product imaginable. It's a one-off thing with no addictive potential and lots of free alternatives.