This is where image/video posts will be displayed. The viewer can watch an embeded youtube video, or click on an image post. The image posts will create a frame on the current window, displaying the content of the post, while dimming the original page content. The viewer can close the post by clicking outside of the content frame or by clicking the 'X' button.
Google+
This is where some of the store contents will be listed. Clicking on an item opens the store in a new tab, with the clicked item selected.