I'm interested in Amazon's new eBook--not interested enough to pay $399 for one, but if anyone at Amazon wants to send me one to try out, I will be happy to report the results to you readers.

But of course, what I'm particularly curious about is how well the thing is selling. The Kindle is bound to have significant network effects; how valuable it will depend substantially on how many people use it, since that will affect not only how many titles there are, but whether the service is suddenly discontinued leaving you with a pretty white rock that's not even heavy enough to make a good paperweight.

I thus, naturally, turned to Amazon's sales rank system. But Amazon has found a way to neatly protect this valuable information from prying eyes: the system helpfully informs me that the product is "#1 in Kindle Store".

We want to hear what you think about this article. Submit a letter to the editor or write to letters@theatlantic.com.