Americans View 14.3 Billion Videos during the Month as YouTube Paces Growth

RESTON, VA, February 4, 2009 – comScore (NASDAQ: SCOR), a leader in measuring the digital world, today released December 2008 data from the comScore Video Metrix service showing that U.S. Internet users viewed a record 14.3 billion online videos during the month, representing an increase of 13 percent versus the previous month. YouTube led the growth charge, accounting for 49 percent of the incremental gain in videos viewed versus November.