Here are a couple of interesting posts about the recent changes to Google AdWords that will continue to evolve during the coming months… There will now be four ads at the top of most searches, instead of three. And there will be no ads on the right side of the search (which is no biggie because people have been visually blocking those out for a very long time). This will mean a decrease in the total number of available ad spots, which may increase the demand for those spots, and as a result potentially increase the cost. We’ll be keeping an eye on this to see how it continues to take shape.
From a marketing trade website:
FAQ: All About The Changes To Google’s Ad Layout On Desktop Search Results