Online advertising revenues reached almost $5.9 billion for the third quarter of 2008 – an 11% increase over the same period in 2007 and two percent higher than Q2 results, according to the latest report from the Interactive Advertising Bureau (IAB) and PricewaterhouseCoopers LLP (PwC), MarketingChart writes.

Data from the IAB Internet Advertising Revenue Report show that while double-digit annual growth continues, the quarter-to-quarter curve remains relatively flat compared with recent past performance.

Despite the condition of the US economy, the Q3 results still represent the second-highest quarter results ever. For the first nine months of 2008, revenues totaled $17.3 billion, up from $15.2 billion in the same period a year ago and surpassing the record set in the first nine months of 2007 by nearly 14%.