Office Web Apps is a bundle of Word, Excel, PowerPoint and OneNote that is designed as a complement to Microsoft Office. Web Apps provide user with a way to to view, edit, and share files right from a Web browser (Internet Explorer 7 or later for Windows; Safari 4 or later for Mac; and Firefox 3.5 or later for Windows, Mac, or Linux).There is a free and ad-supported consumer version of Web Apps — which users can access via their Windows Live SkyDrive and/or Hotmail — and two paid, SharePoint-centric business versions (one of which is hosted by Microsoft and one hosted by the customers or partners)...