Google made an announcement in its official blogpost that they are going to roll out new algorithmic improvements that looks at the layout of a webpage and the sum of content you make out on the page formerly you click on a result.
Although there is nothing to react over this as Matt Cutts had already announced about these changes approximately 2 & half month ago that google is working towards to makes these changes.
Google says in its official blogpost :
we’ve heard complaints from users that if they click on a result and it’s difficult to find the actual content, they aren’t happy with the experience. Rather than scrolling down the page past a slew of ads, users want to see content right away. So sites that don’t have much content “above-the-fold” can be affected by this change. If you click on a website and the part of the website you see first either doesn’t have a lot of visible content above-the-fold or dedicates a large fraction of the site’s initial screen real estate to ads, that’s not a very good user experience. Such sites may not rank as highly going forward.
You can easily visualize whether your site is affected by this or not with a special tool browsersize.googlelabs.com which Google has specially designed. look at the screenshot below how it looks like?
Gabblet is looking completely untouched with this penalization what about you, are you safe?