Sun 13 April 2008 - Hack attack!
Thanks to Kirsten for pointing out that at least one of my blog posts got hit with a spam attack, inserting invisible links into it.
See here and here for other reports.
The quick solution is to upgrade to WordPress 2.5 quick smart. Which I’ll be doing now, so apologies for any interruptions.

April 14th, 2008 at 6:00pm
Yes yes, it’s going around… I got some spam in my blog comments last week. Must be the time of the month or something. sheesh!
Cyalayta
Mal
April 15th, 2008 at 9:11pm
I’ve been really impressed with the spam control for Wordpress 2.5 - only had about 2 spam comments since I upgraded. Sounds like this is a little more sinister, though!