"The Mozilla Foundation and Peer-to-Peer University (P2PU), among others, are working to create an alternative - and recognized - form of certification that combines merit-earned badges with an open framework. The Open Badges Project will allow skills and competencies to be tracked, assessed, and showcased."
Some interesting things to make sure you aren't 'conned' into paying more!
50 scientifically proven ways constitute 50 chapters of the book, longest of which take 7 pages. The authors take the position that persuasion is a science, not art, hence with the right approach anybody can become the master in the skill of persuasion. So, what are the 50 ways?