You may have noticed a new addition to the blog; the new +1 button joins the existing Facebook and Twitter buttons at the top of posts. +1 is a new initiative from Google that brings forth more relevant search results influenced by user feedback. Here is a snippet from the official Google launch:
+1 is as simple on the rest of the web as it is on Google search. With a single click you can recommend that raincoat, news article or favorite sci-fi movie to friends, contacts and the rest of the world. The next time your connections search, they could see your +1’s directly in their search results, helping them find your recommendations when they’re most useful.Since I now have the "+1" button you can recommend any blog post you wish using the new feature.