This days many web developers try to load your content into their own frame, to help sell ads on their sites or not to send visitors to your web page.
Just for example Google Images. With this plugin sites such as Google images will be forced to load your side outside the frame.
Auto-optimize (bulk) your Image title attributes (Image title tags, title text) from page/post/product titles &/or site name or with custom instructions (Post META Box) into HTML code.