By now all of us internet marketers, seo's and webmasters alike should now about social marketing and the effects on search engine optimization. If you are still in the dark you need to get out of your basement buddy.
Google + and other social indicators are allowing Google and other search engines to get a strong indication of what is and what isn't relevant to readers. So if your content has a lot of likes and + 1's then its going to do better in search. Setting up the proper social profiles and networking in the right circles will give your website a much needed boost.