The Microsoft Bing Bar is a browser tool bar that gives you easy access to Facebook, your email, the weather and more - all with a single click.
The Bing Bar is installed automatically when you install Skype 5.8 for Windows desktop. However, if you do not wish to install the toolbar, simply un-check the box and click Continue.
You can disable the Bing Bar in Internet Explorer at any time - just go to Tools > Manage Add-ons > Toolbars and Extensions, select Bing and click Disable.
To uninstall the Bing Bar: