Read a nice review on an emerging trend :) ... "At I/O conference, it became even more clear that Google no longer sees search as returning a list of 10 or 20 relevant links when you type in a query. Google Now is much more than that. It's the embodiment of that geeky dream of a "Star Trek Computer," an intelligent machine that understands natural language and real-world context to assist you before you even know you need assistance. 

Google Now scans your email and knows when your Amazon package is arriving. It knows what sports scores to show you based on the teams you've searched for. It knows what stock prices to show you based on the companies you search for. It scans your calendar and reminds you when to leave to make your appointment on time. And all that data is delivered to you without you having to ask. 

Following I/O, Google Now is more prevalent than before. Google recently launched the app on iPhones and iPads, and it's coming to the desktop soon if you use the Chrome Web browser. Next year, you'll be wearing Google Now on your face if you buy Google Glass.

Then there are photos, arguably the most personal things you share online. Now, Google scans every single one you upload to Google+. It can learn what your family members look like and group photos of them into albums automatically. It can tell if your subjects are smiling. If they're not smiling, it can stitch their faces in from other images where they are and create the perfect photo for you. It knows if you're taking pictures of mountains or puppies or buildings or famous landmarks and group your photo albums together accordingly.

It's creepy and magical at the same time."