Do you keep hearing bloggers talk about great plugins they’re using? Do you have no idea what they’re talking about? That’s probably because you’re using a WordPress-hosted blog rather than a self-hosted blog (if you don’t know the difference between the two, read this article on WordPress.com vs WordPress.org).
So, what is a plugin?
Plugins are a little apps which you can download and install to extend the functionality of your blog, but only on self-hosted blogs. If you’re using a WordPress hosted blog you just have to make-do with widgets.
You can get plugins which do pretty-much anything, from SEO, to creating a site map, to helping you to integrate with social media platforms including YouTube, Flickr, Facebook etc.