Widgets are blocks of elements that you can add to your WordPress site’s sidebars or widget ready areas. WordPress comes with several default widgets of its own, and other WordPress plugins may add their own widgets as well. All these widgets can be seen on the Appearance » Widgets screen. However, you’ll notice that some of these widgets are not very useful, and you will probably never use them on your website. If you are using plugins that also add their own widgets, then soon the widgets screen will be a huge mess making it difficult to locate the widgets you actually want to use.