Service that allows me to share, edit,and comment on word/excel documents with others

I want an online service (preferably free) which I can use to exchange files with other users. It will act mostly as an FTP, but I'd also like the ability for me and others to work collaboratively on Word documents or Excel spreadsheets by editing and commenting on them.

Someone recommended Google Documents, and I believe it has everything I need (haven't really taken a look at it), but I was wondering what my other options are and what is the more preferred method.

Thanks in advance.

 

Hey you can use live documents. Details are given here --> http://www.live-documents.com/live_spreadsheets.html

 

try scribd