Long before she wrote Share This!: How You Will Change the World with Social Networking, Deanna Zandt was my social networking guru. Of course, I had the benefit of being her friend, so I was privy to her frequent and useful insights on the value of joining Twitter, Foursquare and Facebook, and the most effective ways to use these technologies to promote my ideas and my activism. It was Deanna who convinced me that it benefits your activism to humanize yourself on social networks, and even that you can really spread information far and wide 140 characters at a time. So I have to start off by saying: you rule, Deanna! Your guidance has been invaluable to me.