A lot has changed in the last 20 years, but not this technology: text messaging. Monday, Dec. 3, 2012 will be the 20th anniversary of the first SMS message.
Joel Willans on Conversations by Nokia has collected "10 astounding facts about the humble SMS." Here are teasers; read the full article for the fun details.
Personally, I think texting is inferior to email, but I seem to be in the minority.