Since the introductionof +1 button in March, search users and webmasters have been looking forward to get it at more places than just search results.
Finally yesterday Google made it available all across the world wide web.
Below are few websites, Google has partnered with and where +1 buttons will be seen over the coming days.
How Can You Add It Your Website?
As the last word, some comments on the post indicate, it is still not available across the globe (for eg. Indonesia).