Every Kindle 1, Kindle 2, and 3G-equipped Kindle 3 was able to browse the web on its 3G connection for free, with no data plan, for the lifetime of the device — albeit with a very slow, clunky, minimally functional browser that took forever to operate and navigate.
With the Kindle Touch 3G, the only new Kindle with 3G available and likely the first e-ink device to have usable web browsing, this is no longer the case: only the Kindle Store and Wikipedia can be browsed over 3G.
This is perfectly reasonable given Amazon’s cost structure, but it’s a bit sad for Kindle geeks. I never used the 3G-web-browsing ability of my Kindles, but I always knew it would be there in a pinch. I bet most Kindle owners didn’t even know it was there.