Amazing figures from a booming industry. The Interactive Advertising Bureau (IAB) and PricewaterhouseCoopers (PwC) report that Internet advertising revenues reached a new record of $3.9 billion for the first quarter of 2006. The 2006 first quarter revenues represent a 38 percent increase over Q1 2005 at $2.8 billion and a 6 percent increase over Q4 2005 total at $3.6 billion.