I know what you're all saying, "Omg another jerk who just wants to ruin our site". But, unlike the other people who just blatantly flame you, I'm actually going to give you some proof.
First: The horizon. Physically, if the earth were flat, we would see infinitely all the way to the ice walls. But, the earth seems to dive down after a while, showing a curvature.
Second: The "conspiracy". There is no motive. The only thing I can think of is to get more money from S&H.
Third: The ice walls. If these ice walls existed, then why aren't we worried about them melting with Global Warming? There is the possibility that Global Warming is another conspiracy, which is plausible.
Fourth: How can they keep a conspiracy this big for so long? It seems out of their powers.
That's all I can type at the moment. If you're going to argue against my points, back up your comebacks with proof. And don't be rude, that just shows insecurity.