A Yahoo! Avatar is a character that you can personalize and use when interacting with friends online. By changing hairstyles, clothes, accessories, and backgrounds, you can create your own unique persona.
Yahoo! Avatars are displayed in the Messenger List of Yahoo! Messenger versions 6.0 and higher.
Now yahoo is come up with advance feature of Yahoo Avatar Town(Beta)..well its just auesome..!!! (wondering..if Beta is so cool..how will be the alpha version)
Well Simple interfacing and it takes just 2MB per whole selection and masking up the avatar of ur own choice...