How to add the button to the tool bar in Firefox 4?

How to add the button to the tool bar in Firefox 4?

If you have tried out the latest beta of the Firefox 4, you probably have noticed that the RSS web feeds subscription button which is present within the location bar of previous versions of Firefox is missing.

By default the new RSS web feeds subscription button is not visible. To add this to the toolbar ( or navigation tool-bar as it is called in Firefox 4 ) just right-click on the toolbar and select customize. In the customize tool bar window that appears, click and drag the “Subscribe” icon to the desired location. Done.