http://www.amazon.com/gp/help/customer/display.html?ie=UTF8&nodeId=43568...
"How does it compare to wikipedia?
Like wikipedia, we support group editing, version history, reverts, notifications on changes, and diffs. Unlike wikipedia, we will use the rich text editor for editing instead of using a hacky text decoration language."
Well, I daresay many of us prefer our "hacky text decoration language ". But interesting,
Scott