The BlackBerry Playbook has some dedicated fans. Not many, of course, but they are certainly out there. One such fan took to the CrackBerry.com forums with a rather novel idea on how to support RIM and the PlayBook: retail evangelism, ninja-style. His plan, at least in part, is to help the PlayBook cause by sneaking a poster into stores that shows some tips, tricks, and basic functions. His thought is that this will help increase PlayBook sales by showing consumers the basic’s of the device. Because, you know, a quality product needs basic instructions.