Search Engine Watch posted that "Annual Ad Spending Study: Where & Why Advertisers Are Moving Online" released this week by Outsell, Inc. contains advertiser data about the effectiveness of search keyword, contextual and behavioral advertising online, as well as online versus offline advertising methods.

Included in the findings of 1,200 advertisers controlling an estimated $2.8 billion ad budgets are:

* Spending in online marketing will increase 19% in 2006, while growth in search engine advertising will increase 26%.
* Growth in online advertising is eight times the rate of television ads and at six times the growth rate of print advertising.
* Advertisers find Google search keyword advertising more effective than both Yahoo! and MSN, and Google contextual advertising more effective than Yahoo contextual ads.

ClickZ has more detailed information on the overall findings while JenSense has a more detailed look at the contextual and behavioral advertising findings.