The first rule of flow charts is that they should be intelligible. In a presentation, you do have a chance to explain what’s going on, but a good PowerPoint series makes sense on its own. The flow chart presented here is simply baffling—and the pictures don’t help much. What’s going where? Who’s getting what? What’s the difference between a one in a big black square and a one in a little red circle? What is a “follower feed”? And why are the some of the "salmon" going downstream?
Nor does this social networking slideshow rally after the incoherent flow chart: It later shows a series of e-mail screen caps that are ugly at best, and incomprehensible at worst.