Writely is “a web word processor that provides simple and secure document collaboration and publishing on the web using only the browser”.
Here are some screenshots from the Writely tour pages:
Sounds like just what I need – I used Gmail drafts to keep track of my documents that I needed to access from the web, and I was just about to start deploying a wiki on rahulgaitonde.org – just for myself. Both seemed rather clumsy solutions. Writely, here I come!