Which device can you not live without?: The New York Times and Forrester Research.
Internet penetration rates: Internet World Stats, www.internetworldstats.com.
Number of Google Plus users: Google Blog, googleblog.blogspot.com
Number of Facebook users: Facebook, Inc.
Word processing market share: Author estimate based on available market data.
Number of online movie downloads and streaming views: “Internet To Surpass DVD in Movie Consumption, Not Revenue,” The Los Angeles Times, March 23, 2012.