It looks like Google are testing on a wider level the features I noticed back in October on one of their test bed sites.
Tried and Tested Tips to Improve your Website – Part 1
1. DO NOT use excessive graphics or banner images on a single web page. They tend to slow the loading of your Web page. Impatient surfers might close their browser and move on. If you have many images on a single page, consider deleting few of them or moving them to a new page.
Can This Tested Technique Improve Poor Web Lead Generation Rates?
Are you getting visitors to your Web site but not converting enough of them into qualified leads, customers or subscribers? This is a very common problem. The point of this article is to explain the benefits of adding an opt-in section to your Web site and show proof in the form of a measured experiment the Conversion Chronicles ran with for 3 months that the technique works. Adding opt-in is designed to help instill trust in the visitor and trust ultimately is the key to improving online lead generation and eventually closing the deal.