Google docs

I can see the usefulness of this. Obviously clients frustrated by the lack of Office applications on the reading room PCs find Google docs useful. The other use for these applications is for people who travel a lot and lack a laptop. They could access their documents wherever they are (assuming there's net access).
For the library itself, I'm not so certain it could be used for work by staff. We already have a network for common access to documents, and the capability to restrict access to anything that might need it. Also, for professional purposes, they may not provide enough features that are required.
It would be useful for anyone working with colleagues in other institutions, be it in public libraries or the other state libraries. There are also possibilities for those who work with suppliers and publishers. I imagine there would be issues surrounding any sensitive documents though. Would we trust our documents to be stored on servers and equipment outside the library?