I was surfing Vegard Sandvold's excellent blog, reading his 3 Quick Design Patterns for Better Faceted Search (well worth a look if you're in the business of designing or implementing web apps of any kind), when I came across the above slideshow. I found it thought-provoking. We're all, in one sense or another, in the persuasion business. The best ideas are always actionable. Why not make it easy for people to act?