The social media widget lets you share content from the AMD community on other social sites, like Google+, Twitter, and Facebook.
However, sometimes it blocks content, like this.
If you hover over the widget, a "Hide" arrow appears at the bottom. Depending on what's behind it, it can be pretty inconspicuous. But it is there. Click the arrow, and the widget vanishes.
If you want to show it, there is a small arrow you can click to show it. (I couldn't resist, I had to use a screenshot of hiding the widget to show how to show it. Recursion is fun.)