Basically you don't have to pull anymore. An example of what happens to me every day:
My laptop is connected to Internet all day long, and I work on my computer iMac. I keep pushing about every hour, and when the day is over, I just close my laptop and can go on working in the train (no Internet there).
If I hadn't been using Dropbox, before leaving work, I would have to pull, and sometimes I just don't have time.
