I think I will start measuring productivity by the number of emails I send each day. I hate actually writing email, so this may be a good measurement.
For instance, I have several things happening at one time, the more I communicate the better they go. Also, for my job, the more status reports I send out, the more work I feel like I'm doing.
Today I've sent only 14 emails. That's much better than the zero to five I normally send. I wonder what my average could be. Also, I find that if I send email immediatly, I get more done because I just get it out of the way. A large part of my day consists of corispondence of some kind already. I usually just put it off.