A plugin is a software addition that adds extra benefits and features to your website. By using plugins you are able to expand or upgrade the capabilities of your WordPress blogs. The good news is there are hundreds of plugins available for every purpose, from keeping your blog statistics to optimizing your blog for search engines.
Some plugins add advertising, and monetizing to your website such as Google AdSense plugin. Google AdSense matches ads to your site’s content, and you earn money whenever your visitors click on them. Later i will write a more detailed post about Google AdSense and how to make money from it. Plugins, widgets are basically the same thing. They add links and feeds and other special features.