I did it for a couple days when we had some downtime at work. It was pretty cool, but I agree that some of those are really tough. Hard to distinguish between Elliptical and Spiral when all you have are 14 pixels that are magnified to the point of being a shapeless blob. And figuring which direction the spiral is turning? Forget about it

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I was just sitting here contemplating the immortal words of Socrates who said, "I drank what?"

"Think of the rivers of blood spilled by all those generals and emperors so that, in glory and triumph, they could become the momentary masters of a fraction of a dot." --Carl Sagan "Pale Blue Dot"