Adobe Buzzword
https://buzzword.acrobat.com

adobebuzzword2.pngAbout Adobe Buzzword: "With Adobe® Buzzword you can create a document, share it with colleagues, and review and revise it collaboratively on the web. Buzzword runs from Adobe secure servers, and your documents are stored there, so they are always available on the web. Buzzword has two views, the Document Organizer and the Editor. Which view you start in depends on how you arrive at Buzzword. If someone sends you an e-mail message with a link to a Buzzword document, clicking the link opens the document in the Editor. Starting Buzzword from Acrobat.com opens the Document Organizer. Either way it’s easy to switch from Organizer to Editor, or you can keep both views open at once."