This is one of the reasons I love G+ and why Martin Shervington is my (social) hero. Here is a bit from the video description:
Every post on Google+ is indexed by Google, so content that is amplified on G+ can surface very quickly in Search. Check out the ‘SEO Facts’ and ‘Evidence’ here!
Want to learn more about Google+? www.plusyourbusiness.com (Free Quickstarter Guide)
Watch the under 2 minute video to see why I’m a fan. It’s STILL all about Search.