I honestly don't know how I used to teach before the widespread adoption and use of the Internet, although two-thirds of my career comfortably fits back in the previous millennium. It just seems so natural nowadays to use the tools provided by my employer.
I have often blogged about how I use 'course pages' with my classes. I find that I can easily bother students with new information even when they're not in class. That's something every teacher's got to love.