Google's updated search engine algorithm assigns more value to websites that receive a lot of social approval signals. These are indications that social media users find these pages helpful or useful and include such things as Facebook "Likes", how many times a link to the page has been posted on Twitter, and the number of "+1's" a site has on Google+.
To increase these social approval signals on your web pages, you need to be active on social media. The bigger the number...