via Center for Media Research 'Research Brief' (29-April-2007):
"PQ Media's Alternative Media Research Series, the Blog, Podcast and RSS Advertising Outlook, reports that advertising spending on user-generated online media - blogs, podcasts and RSS - did not begin until 2002, but this combined spending has grown to $20.4 million by the end or 2005, a 198.4% increase over the 2004 level. Spending on blog, podcast and RSS advertising is projected to climb another 144.9% in 2006 to $49.8 million ..."
Some more quotes:
- Blog advertising accounted for 81.4%, or $16.6 million, of total spending on user-generated online media in 2005, but blog ads will comprise only 39.7%, or $300.4 million, of overall spending in 2010
- Podcast advertising totaled only $3.1 million in 2005, but is projected to reach $327.0 million in 2010, when it will account for 43.2% of all user-generated media advertising
- Spending on RSS advertising totaled $650,000 in 2005 and will grow to $129.6 million in 2010
- Total spending on user-generated online media is forecast to grow at a compound annual rate of 106.1% from 2005 to 2010, reaching $757.0 million in 2010
Executive Summary (PDF, after registration)