[seekely]

The t-shirts are of quality, I promise :)

The subscription suggestion is great and might be a better fit for Nifty. I'll have to give some thought.

Another direction I am thinking of going is more clearly separating the purchase from the pick. So you pick your shirt to buy and then make a separate pick for the least popular. I worry the additional UI may complicate things, but it is probably worth testing.

[kerneis]

No, regardless of UI, I think the dilemma of having to buy yourself the least popular one to get an extra t-shirt is important. And what would happen to your buisness model if everybody liked (and ordered) t-shirt A but nominated t-shirt B? You would have to ship two t-shirts to everybobdy, whereas your current plan guarantees that no more than 20% of customers get a free t-shirt --- which also makes it more challenging to play the game.