So I decided to follow Guy Kawasaki on twitter and to my surprise, he followed me back! In less then 30 milliseconds, I discovered that he follows everyone. Why? I wondered why? So I googled it up and stumbled upon this blog:
Turns out that he does it for two reasons: first, common courtesy; second, so that anyone can send him a Direct Message.
Courtesy, I thought, was totally forgotten, but thankfully, Guy proved me wrong.