Fun discussion.
Indeed we are over-complicating this, not surprising since we don't fully understand the implications of our "new world" and how our once solid communication methods are no longer efficient enough (think about calling 100 people) when you could do otherwise.
Facebook, Twitter, MySpace, all of it, it's simply a matter of communication. We have always had a few different ways to try to get our message across (grunts, smoke-signals, pony express, telephone, dial-up, broadband, mobile-web) and that's all we are trying to do now.
Advertising, marketing, and selling is communicating - nothing more, nothing less. Learn to communicate like your customers want, expect and appreciate or find a new gig.