Today is release day for Twavatar – Twitter Avatars For Your WordPress Blog.
It is a simple plugin that displays a commenter’s Twitter profile image in place of the standard WordPress gravatar. If a Twitter image can’t be found, the regular gravatar is displayed.
Twavatar is nice to twitter – it only looks once, and if it finds a profile URL, it caches it in your database for future use. Future versions of the plugin will have an expiry time on the cached URL to ensure avatarial freshness.
You can download the plugin from its page.