Some points to counter-point a flat earth.
If the earth is flat, how deep is it? If its not very deep, than explain underground mining, volcanoes, and oceans/seas.
If a meteor hit a supposed "flat earth" on the side, meaning the 'thin' side, wouldn't the "flat earth" rip? (logically speaking) If the meteor hit the earth from above, wouldn't it go right through the earth? (If being flat of course, because if not, than the world would be a cube or prism)
How does water stay on a flat earth? Is there a wall on the edges of the world preventing it from falling off? If there is NO wall, than why is there still oceans on Earth?
A flat Earth is illogical. A cubed one is more like it. =]