<mangox:Gravatar />
Nested options
It must be inside a <Comments> tag. (I will add also Author tag)
Attributes:
size: What size of image to show (default: 80)
rating: What rating of images to show (default: R, for more options, check http://www.gravatar.com )
defaultimg: What image to show if the current user does not have a gravatar (path from current skin folder unless you want to use an absolute path that starts with http:// )
border: If you want to add a border to your image
imgtag: If you want the tag to output an img tag, otherwise, it will only output the gravatar address (default: true)
class: If you want to add class="yourClass" to the image tag