If you're new to WordPress, you might have noticed a little grey icon that shows up next to your name. Well, this icon is the little "mystery man" gravatar. Perhaps you've wondered what it is. Essentially it is the default image for your WordPress site. Most importantly, when you add your own gravatar image you're actually adding some branding to your comments section. Which is pretty important, because branding matters. That's why today we're going to discuss what a gravatar is, how to use it and why. In addition, we'll even show you how to change the default gravatar image and replace it with your own custom one.