Avatars for reviewer profilesNext to a reviewer's name (such as Becca), CAR displays an avatar icon.
CAR doesn't provide its own upload feature for these avatars; the site makes use of the ↗Gravatar service instead.
For this purpose, CAR uses your private email for the Gravatar look up, not your public one.
See also the corresponding Forum Thread.
Also, this excellent post, with how-to pics: //blogher.com/gravatar-what-it-and-why-you-should-use-it