I must say that of the 29 listed choices by the author of his favorite Web 2.0 apps, I'm not familiar with any of them. However, realizing that I've been using Web 2.0 all along was an eye opener. I've used my Kindle to order items on line via aol.com, I have R.S.V.P.'ed threw online social invitation apps for parties and other social functions, shared photos with parents and ordered pictures online for my son's football team and homecoming events. All of these experiences allowed me to interface with various options and choices such as delivery methods and how I wanted my end product or message to appear. Wow....who new?