Writely

Description:

A web word processor.

Quoted from writely.com

Upload Word documents, OpenOffice, RTF, HTML or text (or create documents from scratch).
Use our simple WYSIWYG editor to format your documents, spell-check them, etc.
Invite others to share your documents (by e-mail address).
Edit documents online with whomever you choose.
View your documents' revision history and roll back to any version.
Publish documents online to the world, or to just who you choose.
Download documents to your desktop as Word, OpenOffice, RTF, PDF*, HTML or zip.
Post your documents to your blog.