Among the open source software offered by Google in recent times, mod_pagespeed is probably the most interesting, and is certainly intended to save a huge amount of time for web developers.
On Google+ comes the zoom on photos
The user is given also the opportunity to give an overview of the image, move the zooming, clicking the mouse and moving to the right or to the left.
The novelty is useful especially for those who share on Google+, images and high resolution photographs. Even create or capture 'his own'. "We are excited to launch these new features - Cohen says - in only a few weeks after the launch of the full-size backup on Android devices."
Perhaps because of the meaning is not very clear his name (more or less: "touch someone with your finger to get his attention"), Poke is one of the least used features from those available on the Facebook...