James Carswell noticed that Google, on some browsers, has shifted the search ads on the right hand side of the search results page, closer to the free (organic) results. I personally was able to replicate this change, by comparing Firefox to Safari and posted a video illustrating the change.
In the video below, you will first see the Firefox browser, with the ads closer to the organic listings. Notice, when I expand the browser’s width, the ads don’t move to the far right, like it does in Safari (i.e. the old way). Here is that video: