By special invitation only at the moment, but Google is testing a new service which integrates content from a user’s Gmail account when they perform queries in natural search.
So what, you might say.
On the one hand, combining the two makes a fair amount of sense – Google is integrating as much content from a user’s Plus account and their subsequent social circle into search results already, so this is a logical extension.
Read full story at: http://www.tnooz.com/2012/08/10/news/google-introduces-flight-tracking-system-in-search-results-using-your-booking-emails/