Amazon offers WiFi-only and 3G versions of its Kindle eReaders. If you pay a little extra for the 3G model, you can download books and other content from anywhere you have a 3G signal for no additional fee.
If you have a Kindle Keyboard 3G, you can also surf the web for free using the Kindle’s experimental web browser. Up until recently, you could browse the web as much as you liked — but it looks like Amazon is now limiting free web browsing over 3G to 50MB per month.
Members of the MobileRead forum report that once you hit the limit, you’ll see a notice on your Kindle letting you know that you have 24 more hours to use 3G, after which you can continue to use the browser over WiFi.
The move will likely save Amazon a few bucks. The company has been footing the bill for free mobile broadband access, and while occasional web browsing isn’t likely to cost the retailer very much, some users have figured out how to hack the Kindle 3G so it can be tethered to a PC and used as a modem for free 3G access.
Amazon doesn’t allow free browsing at all on the newer Kindle Touch 3G.
Also — web browsing on an E Ink screen with a slow refresh rate isn’t that much fun anyway. Still, it’s a nice feature to have if you don’t have a smartphone and you occasionally need to check your email or look up a flight departure time when you’re on the go.