Despite the recession, online advertising continues to grow. According to eMarketer analysts, marketers are spending more on Internet ads, while spending less on advertising in other media, such as newspapers, radio and magazines.

The eMarketer report predicts that the online share of ad dollars will continue to grow, rising from nearly 10% this year to slightly more than 15% in 2013.

Again, its all about the cost-effective nature of the medium coupled with the ability to not only target who you want to reach but to measure your actual results and optimize future campaigns based on that data. "Marketers can more readily measure the results of Internet advertising than with most traditional media," said David Hallerman, eMarketer senior analyst and author of the new report, US Advertising Spending: The New Reality. "This produces more-efficient advertising and higher ROI, which in turn pushes traditional media to compete with lower pricing."