I always wanted a web based version of Microsoft Office to edit my doc files on the go and get all the things done virtually, especially while using my iPad ! I've been using Google docs for a while now to view/edit my doc/excel files online through my web browser, and I am so excited that Microsoft office web app is finally available ! Of course it does not have all the options/features yet available but I hope it'll be updated very soon.
Office Web Apps you've to http://office.live.com and log into your account your doc file will be located and stored on your SkyDrive. and from there you can add/view/edit your Microsoft Office files.