Google added some new extensions to Google Chrome gallery:
- Layers allows you to overlay content like sticky notes, images, videos, tweets and even maps over any web site. You can drag and drop your content anywhere on the page. You can also share and discuss whatever you add to site with your friends across social networks.
- Postrank for Google Reader helps you stay up-to-date on news and posts that matter. The extension aggregates engagement activity such as tweets, comments and votes from over two dozen social networks and ranks stories based on how much engagement each story has received.
- Ozone get suggestions from fifteen different sources like Google, Amazon, your bookmarks, Gmail, YouTube and more. As you type in the Ozone search box, you can see the suggestions change in real time.
Highlight to Search allows you to search keywords by highlighting instead of typing them into a search box. When you highlight words within a web page, you’ll see a magnifying glass icon appear below highlighted keywords. Clicking icon or keywords allows you to search easily from the search box that immediately appears.
More Info: Chrome extensions gallery[Source]