Still trying to wrap your head around WordPress' Gravatars? By default, all WordPress users and visitors are given an avatar called a Gravatar. But this isn't your typical system in which users can simply pick and choose their avatar. Gravatars are universal, meaning a user's Gravatar will be displayed on all compatible sites. To learn more Gravatars and how they work, keep reading. Avatars, as you may already know, are small images placed next to user names. They are used as a form of personalization, allowing website users to distinguish themselves from others. Gravatars are pretty much t...