It’s not often that I need an online word-processor, but if I do I’ll use ajaxWrite. It’s fast, and was able to open up some fairly complex Microsoft Word documents I threw at it. Seems to have all you need to create a “rich-text” (ala Microsoft Word) document online. It’s not perfect (it’s a V 0.9 release) but it’s free. I wouldn’t use it to edit something private, as it does send info back to a server. Also, it may be awhile before I relinquish desktop apps for online apps, but this would do in a pinch.