I've said in the past that not everything belongs in a browser, and I think a "word processor" definitely falls into that category. AjaxWrite will not replace Microsoft Word, regardless of how many documents have been created. (How many of those are "real" documents, and how many are people just trying this thing out?).
It's perhaps even more amazing that AjaxWrite isn't even technically an AJAX application, but rather a XUL application. In other words, it is not really web-based and will only run in FireFox. Last I checked, Internet Explorer still had a huge margin in marketshare. ( It's sort of like touting Windows Live as AJAX when it's really a bunch of ActiveX controls ).
How incredibly lame.