How to Read Search Engine Results Pages
Get friendly with social results.
Currently the three major search engines incorporate social-network results into the organic index; in other words, they index social-network sites just like any other site.
There was a time when Google was indexing Twitter tweets and providing them in a little scrolling box embedded within the search results. Google no longer does that, at least at the time of writing. Perhaps the big social-networking news, though, as far as Google goes, is Google+, Google’s answer to Facebook.
Have you noticed small author photos associated with search results, often from blogs? These little pictures are coming from Google+ accounts. Google is also personalizing your search results based on your Google+ relationships. If you’re searching Google while logged into your Google account, you may see personal results from your Google+ friends at the top of the page.