Google Launches Hashtag Searches, Shows Google+ Posts On Search Results Page
According to Matt McGee
“The integration of Google+ across Google properties continues in a big way today with the launch of hashtag search.
Simply put, if you search Google for a hashtag, you might see Google+ posts using that hashtag to the right of the regular search results.” However this is currently only available on Google.com and Google.ca although it is expected to be rolled out globally following testing.”