Google processes more than 100 billion search requests each month
Has not revealed how many are now coming from mobile
Google's influential search engine has hit a tipping point in technology's shift to smartphones.
More search requests are now being made on mobile devices than on personal computers in the U.S. and many other parts of the world.
The milestone, announced at a digital advertising conference, serves as another reminder of how dramatically online behavior has changed since 2007.
More....
