Online productivity tools

These are great -- or may be great if I can remember to use them. I am trying to think some reason why I need to share a document with someone and work on it together at the same time. It would be interesting to see how well that worked.

I must admit, I like that I wouldn't have to email a document to myself to work on it. I try to ignore work-related things that I email to myself at home. It will be an interesting experiment.