Today, +1’s will start appearing on Google search pages globally. We’ll be starting off with sites like google.co.uk, google.de, google.jp and google.fr, then expanding quickly to most other Google search sites soon after.
If you’re a publisher based outside of the US, and you’ve been waiting to put +1 buttons on your site, now’s a good time to get started. Visit the +1 button tool on Google Webmaster Central where the +1 button is already available in 44 languages.
Adding the +1 button could help your site to stand out by putting personal recommendations right at the moment of decision, on Google search. So if you have users who are fans of your content, encourage them to add their voice with +1!