I'm looking to acquire a jailbroken Kindle/rooted Nook, probably 3G since I assume such a network is more reliable than just going around trying to find open wifi networks. I don't expect to use it heavily, I just like the idea of being able to check Wikipedia/Yelp/Twitter/Facebook/Gmail on the go without a data plan. I don't have any care for video or games on such a device, I'm well aware of its limitations. Apps are nice but unnecessary. So, my questions are:
1. Is such mobile use of an ebook reader feasible? From what I understand limited browsing is already very possible, but I'd like to be able to Tweet once in a while or update various statuses. I mean feasible in terms of the processing power of the device and 3G/wifi speeds.
2. How extensive is 3G, if on say the west or east coast of the U.S. would it be possible to get coverage on a random city street?
3. Which device is more compact for such mobile use?
4. Are there any recommendable devices other than Kindle/Nook?
This is basically my concept:
Of course, having a portable library on the go is great as well.