google added "share" button to it's search results: http://searchengineland.com/spotted-in-the-wild-sharing-pages-directly-from-search-results-to-google-127893
these are the things which keeps google on top, they are always coming with something unique and interesting
Share button! That's another good initiative from Google. Probably that is still in test basis. Because, I have not yet found that in Google search result.