Google Docs & Spreadsheets!

http://docs.google.com/

With Google Docs & Spreadsheets, you can:

• Use our online editor to format documents, spell-check and more.
• Upload Word documents, OpenOffice, RTF, HTML or text.
• Download documents to your desktop as Word, PDF and more.
• View your documents' revision history and roll back to any version.
  

Plus, since it's online, you can:

• Invite others to share your documents by e-mail address.
• Edit documents online with whomever you choose.
  Publish documents online to the world, or to just who you choose.
• Post your documents to your blog.
  

To learn more about Google Docs & Spreadsheets, click here.