Gravatar API
Your Gravatar is an image that follows you from site to site appearing beside your name when you do things like comment or post on a blog. Avatars help identify your posts on blogs and web forums, so why not on any site?Gravatar 'APIs' require no authentication, and are all based around simple HTTP GET requests. Use the links below to find out more about constructing request URLs, different implementation options and more.
Setting up Gravatars on your site is easy; you don't even need an account! Plugins are available for leading blog software and content management systems, and our tutorials will have you running Gravatars in no time.
More information: http://en.gravatar.com/site/implement/