What are innovative uses of communication technology that changed the world

4 answers

Facebook

Twitter

Text messaging

(just to name 3)
Invention of the printing press
Telegraph
Typewriters
Trans-Atlantic cable
Telephone
Radio
TV
Dictaphone
Internet
Word processing
Cell phones
Smart phones
Voice activated appliances
I almost forgot -- probably the first technological innovation that aided communication -- the invention of writing.
Ms. Sue is right.

This is interesting: http://www.historian.net/hxwrite.htm (especially the 2nd paragraph for this particular question)

The shift from keeping track of property or sales or inventory to putting a person's thoughts and words and songs into writing is nothing short of amazing.