Several reasons I have found may turn some heads.  Ten years ago over 60% of all small business were on the Internet.  Imagine how many there are now.  According to J.D. Powers & Assoc., over 50 million cars have been sold over the Internet.  Four years ago The Computer Industry Almanac recorded more than 720 million users worldwide. Forrester Research recorded nearly seven years ago approximately 55 million American adults go online from work.  Imagine these numbers today.  Almost six years ago worldwide spending for on-line advertising reached  over $15 BILLION.  On-line grocery sales reached $10.8 BILLION over five years ago.  In 2006, 12% of the population shopped online, in 2007 it went to 18%, in 2008 it has moved to 26%, and 2009 is projected to surpass 36%.  According to (Ipsos-ASI) when it comes to increasing consumer awareness of brands, on-line banner adds are just as effective as a 30-second TV commercial.