Email

Email is a wonderful tool, for the late 20th century. It is not as social, real-time nor hyperlocal; all of which is vital for success in the age of the Great Leveling. My reasons for such negative views on Blackberry and like devices is because they are email centric.

Thus, I think we should rank email using my Great Leveling algorithm even though it is not technically a device or business model. 

Full technology rankings here.