You may have only heard of Avatar from the blockbusting “hit” movie by James Cameron, but the term Avatar has been around for much longer. An Avatar is an image that represents you online.
Gravatar is a free service that offers the you the chance to create your own Globally Recognised Avatar. This means that you only have to create and upload your Gravatar once for it be used across many different sites and platforms.
WordPress embraces the Gravatar within its user profiling. So whether your site visitors are subscribing, contributing, using you forum or making a comment, they can use the same avatar as they do across other websites.