Re: Is Google Docs a real option for a large business?
It depends, as always, on your needs.
If you want to have shared documents without emailing around, automatic versioning (or sorts), and the ability for several people to edit a section with ease (each user's cursor shows as a different colour so you see where they are and what they are changing) then it is great. It also really works as a stand-along web product, no ActiveX, Java, Flash or special (AKA insecure) plug-in stuff is needed, so practically any machine including the cheap, secure, but very basic locked-down Chrombooks work fine.
The down side is its not good at doing complicated documents, so you can't have very fancy formatting and I think the printing options are limited, basically you get what a web browser has in set-up which is a bit less than Office. Also you can't have (or maybe "are spared the horrors of") the whole VB and object embedding that MS Office supports. And it really needs a decent broadband connection at all times, (though they say it has off-line support now).
In summary, if you have a heavy investment in MS Windows & Office already (or your business needs accurate editing of other's such documents), you probably would not change unless the collaboration within the company is so important. However, if looking for a cheap refresh and worried about malicious hacking (as opposed to Google slurping) then deploying £200 Chromebooks and Google Doc accounts is a very cost-effective way of doing so.