What supports better -- buy online and download, or buy retail box in stores?

[MrCoffee5]

I'm hoping someone from the Frictional Games staff sees this, as I really want to know how best to support the release of this game.

I'm going to buy it regardless, but I'd like to make my purchase towards their development as meaningful as possible. As such, I'm curious, does it help more if I buy it directly online and download it, or buy it from a store? Or does it not really matter?

I guess I wonder in terms of if buying/downloading it directly gets them more money than buying a retail copy in stores, or if buying the retail copy helps to prove the game's success, or anything like that. Forgive me if I have no idea what I'm talking about.