Google seems to be offering a new advertising format to their customers using the AdWords platform.
new ad format by google – subscribe to newsletter right on the SERP. very interesting. twitter.com/akumar/status/…
— Amit Kumar (@akumar) November 26, 2011
The company is now allowing newsletter subscription right from inside the ads that are shown on their search result pages.
We are yet to get an official blog post announcing this new feature. Here is a screenshot: