Facebook 'Like' arch-rival, Google's +1 button, has already made its way into Google Search results, and is now ready to take over the interweb and be adopted by non-Google sites. And it's doing it.
The likes of Best Buy, Reuters, Bloomberg, Mashable, The Washington Post and others have announced their intention to integrated the +1 button, but this is just the tip of the iceberg as everybody is welcomed to get their +1 on.
Android Market, Blogger, Product Search and YouTube are also set to receive their +1 update soon so prepare for more button clicking.

Source :tcmagazine.com