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Amazon's Kindle

Has anyone bought or tried out Amazon's Kindle?

Seems like a good way to carry a ton of books around with you.

Currently on their site:
Due to heavy customer demand, Kindle is temporarily sold out. Because we ship Kindles on a first-come, first-served basis, please ORDER NOW to reserve your place in line. Your Kindle will not arrive by December 25th.

So Santa's not going to give it to you then...