Geeks only update: I’ve installed the Ccode plugin to frustrate comment spam. It seems to work a treat; not one spam comment reached my filters since installation and it’s more user friendly than a captcha.
I’ve also fiddled with tags. The new Movable Type tags don’t seem to register with Technorati so following a discussion on Elise’s blog I’ve created a work around. (Creating some additional technorati friendly iterations of tags set as invisible text to avoid repetition)