Despite what you’ve heard, the online version of Office 2010 announced by Microsoft earlier this week won’t be free to corporate users, and isn’t a threat to the likes of Google, Adobe, or even Zoho, which sells online productivity software to small and medium-sized businesses. It’s true that Microsoft will offer consumers a free “lightweight” version of Office 2010 through their Windows Live (formerly Hotmail) accounts. But that largess doesn’t extend to business customers, who will either have to pay a subscription fee or purchase corporate access licenses (CALs) for Office in order to be given access to the online application suite.