The answer to "would you pay?" for any dedicated, single-purpose consumer electronic: Yes. If the device did enough for me. I have a Kindle, which can only rea

The answer to "would you pay?" for any dedicated, single-purpose consumer electronic: Yes. If the device did enough for me. I have a Kindle, which can only read documents. I still have and use an old iPod that can only play music (no games or fart apps?! That thing must be useless). I have a television which can only output video (what do you mean, it can't record what its displaying?!), etc. All these devices - that can ultimately only do one thing - serve me just fine. That isn't to say that every single-purpose device will have a widespread market; the ebook reader market is very much a niche - and so is this market, Twitter anywhere without a cell phone contract. And there's nothing wrong with serving a niche.