The Goog on mobile vs desktop search, and voice and image search.
Knocking down barriers to knowledge
As much as technology has advanced, there are still many barriers between you and the answers you’re looking for—whether you’re juggling a clunky mobile keyboard or waiting for a website to load. Today we held a media event in San Francisco where we talked about some of the latest things we’re doing to tackle these barriers on mobile, announced that we’re bringing our speech recognition and computer vision technology to the desktop, and took the next step for Google Instant—Instant Pages. The thirst for knowledge doesn’t stop when you step away from your computer, it continues on your mobile device. In the past two years, mobile search traffic has grown five-fold. Mobile search today is growing at a comparable pace to Google in the early years. 
Here you can see that mobile search traffic growth over the past three years (the red line) is comparable to overall Google search traffic growth over the same duration (the blue line) but earlier in our history.
One of the technologies driving this growth is speech recognition. With Voice Search, you don’t have to type on a tiny touchscreen. You can just speak your query and the answer is on the way. We’ve invested tremendous energy into improving the quality of our recognition technology—for example, today we teach our English Voice Search system using 230 billion words from real queries so that we can accurately recognize the phrases people are likely to say. As the quality has increased, so has usage: in the past year alone, Voice Search traffic has grown six-fold, and every single day people speak more than two years worth of voice to our system. We first offered speech recognition on mobile search, but you should have that power no matter where you are. You should never have to stop and ask yourself, “Can I speak for this?”—it should be ubiquitous and intuitive. So we've added speech recognition into search on desktop for Chrome users. If you’re using Chrome, you’ll start to see a little microphone in every Google search box. Simply click the microphone, and you can speak your search. This can be particularly useful for hard-to-spell searches like [Sent from my iPhone