Google has added a +1 button to search by image.

The Google search service is becoming more closely connected with the social network Google plus. Previously, developers have added several functions that allow recommending search results to friends, or simply mark the search results with the appropriate button. Now you can do about the same with images, because the +1 button also appeared in the image search.

Interestingly, over the past few months, the "+1" button has become very popular, in fact, it is one of the most popular social widgets at the moment. Of course, its prevalence is largely due to the large number of users of all kinds of Google services, but the success of the social button is noticeable.
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Why did the developers add the +1 button to the image search? Representatives of the team explain this by the ability to quickly exchange the found images with friends and colleagues. For example, you have found a unique picture that has some value for your current work and the work of your colleagues. You can save the picture, then send it to your friends. And you can simply press the +1 button, and those to whom this “mark” was intended will immediately see everything with their own eyes, without the need for intermediate results.

By the way, a bit earlier, the +1 button appeared in user photos on the social network itself. We are testing a new feature for image search, so the number of users for whom the feature is available may be limited.

Via mashable