A new Nielsen//NetRatings study shows that “sponsored link advertising impressions” grew from 55.4 billion to 64.3 billion or 16 percent during the past six months (August 2005 and January 2006). Google in August 2005 earned 36.2 billion, which increased to 41.1 billion in January 2006, a six-month increase of 14%. Yahoo percentage growth was larger than Google’s, accounting for 19.2 billion in August of 2005 with an increase to 23.2 billion in January 2006 or a 21% increase in the past six-months. These
via John Battelle.