Sure, fine, make your single-use devices. But all these e-readers — the Kindle, Nook, Sony Reader, et al — are all focused on the wrong single use: books. (And in the case of at least the Nook and Kindle, the focus is on buying books from B&N and Amazon. The Kindle is more like a 7-Eleven than a book.) The correct single use is reading. Your device should make it equally easy to read books, magazine articles, newspapers, web sites, RSS feeds, PDFs, etc.
It’s pretty clear that Kottke either doesn’t have a Kindle, hasn’t used one for long, and in any case never tried it with Instapaper. (Also, ‘The Kindle is more like a 7-Eleven’? Um, how?)
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