How Google +1’s Improve Search Engine Rankings
Cyrus Shepard reports on the Moz Blog that this year, for the first time, the Moz Data Science Team measured the correlation between Google +1s and higher rankings. They discovered that after Page Authority, a URL's number of Google +1s is more highly correlated with search rankings than any other factor. In fact, “the correlation of Google +1s beat out other well known metrics including linking root domains, Facebook shares, and even keyword usage.” In addition, Searchmetrics, another firm, used a slightly different methodology and found Google +1s to be the highest-correlated factor they studied. They also make some recommendations about how to use Google+ to optimize SEO. Included in these are to follow great people, comment on posts, and share great content, making longer Google+ posts, as well as adding the rel="author" meta tag to your website or blog. Another important factor is to post public. Posts shared privately don't pass the same juice as publ...