Everyone uses Facebook to talk about photos. However, they have allowed themselves to make use of your images royalty-free for almost any purpose, any time. While Instagram isn't only tool which has been effective for businesses, it is tricky to ignore as it is currently worth One Billion dollars and 80 million users. Similar to a social media network, Instagram provides a platform to upload pictures to your Instagram account and share them with all the public or having a private network of people. It's the camera feature of Instagram that requires notice.
Additionally, Google Plus users can upload high-resolution photos instead of minimizing the resolution as with Facebook.