Hmmm... See the full article for more details.
The truth about online ads is that precious few people actually click on them. And the percentage of people who respond to common "banner ads," the ubiquitous interactive posters that run in fixed places on sites, is shrinking steadily. The so-called click-through rate for those ads on major Web destinations such as Yahoo! (YHOO ), Microsoft (MSFT ), and AOL (TWX ) declined from 0.75% to 0.27% during 2006, according to Eyeblaster, a New York-based online ad serving and monitoring firm. It says that last March the average click rate on standard banner ads across the whole Web was 0.2%. This reflects a surge in new ads and Web pages, fueled by the rise in social networks.