2012 U.S. National Texting Competition
It turns out Mark wasn't making any of this up. There really is a a national competition to determine who is the fastest "texter" in the United States. It's taken very seriously apparently, considering that there is a a $50,000 prize for the champion! The 2011 champion, Austin Weirschke, will be coming back to defend his title this year.
For some more details and coverage check out this footage from the 2011 competition.
CBS News story from 2011