I've added Gravatar support to this site.
A gravatar, or globally recognized avatar, is quite simply an 80×80 pixel avatar image that follows you from weblog to weblog appearing beside your name when you comment on gravatar enabled sites.
HTML allowed: <a href="" title="" rel=""></a> <b></b> <blockquote cite=""></blockquote> <em></em> <i></i> <strike></strike> <strong></strong> <li></li> <ol></ol> <ul></ul>
ie: <b>bold</b>
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I should implement it on rackbits.