Google is testing a new and completely different format of ads inside Gmail as was first spotted by Richard Waters of the Financial Times.
A thumbnail image of the ad appear in the sidebar, a place normally reserved for contextual text ads, and clicking this image will open a larger version of that ad in the same Gmail window.
Richard writes:
The small box in the upper right hand corner, which has a thumbnail image in it, was all that appeared alongside the original email. The text advertises an upcoming movie,
View the Original article