Google +1 Button for Chrome
Also Google +1 Button is included in the following topics:
More About Google +1 Button
+1's can help your friends, contacts, and others on the web find the best stuff when they search. By installing the +1 extension, you can publicly +1 any page that you're visiting with one easy click. Once you do, look for the “Share on Google+” option to start a conversation. From there you can comment, choose a circle, and share.
***THIS ISN’T THE USUAL YADA YADA!***
You can manage your +1’s in a new tab on your Google profile (https://profiles.google.com). You can show your +1’s tab to the world, or keep it private and just use it to personally manage the ever-expanding record of things you love around the web.
By installing this extension, you agree to the Terms of Service for the +1 button at http://www.google.com/intl/en/policies/terms/ and the Terms of Service for the Chrome Web Store at https://ssl.gstatic.com/chrome/webstore/intl/en/gallery_tos.html.