trackback (partly) enabled.
if you post a link to a site which has <a href="http://www.movabletype.org/docs/mttrackback.html">trackback</a> enabled (and includes the necessary code for trackback autodiscovery), thraxil will automatically ping it. eg, just by linking to peter's <a href="http://www.thegogglesdonothing.com/archives/000053.html">lizard post</a>, it should create a trackback entry there.
the next step of course is setting thraxil up to receive trackback pings from other sites. that requires a little more work but i'll do it eventually.