#3 Source: Wikipedia http://en.wikipedia.org/wiki/Gamification
#4 Image credit: Philip Toledano http://www.mrtoledano.com/Gamers/02
#5 Image credit: Philip Toledano http://www.mrtoledano.com/Gamers/02
#6 Reality is broken, Jane McGonigal, 2011Entertainment Software Association (ESA). (2010, June). Essential Facts About the Game Industry: 2010 Sales, Demographic and Usage Data. Available from http://www.theesa.com/facts/pdfs/ESA Essential Facts 2010.pdf