I've just completed a small change to the blog script: i've retooled the CAPTCHA image for the comments form to make it a bit more robust.
I've done this change mainly because there have been a fair few spam comments in the past few weeks that have made it past the previous one. Strangely enough, it's been over two months now since there has been an actual legitimate comment on this blog, which has to be some kind of record since i started blogging. Have i become less provocative, or is the one person that actually commented regularly now too busy to? (you know who you are ;))
Anywho, the new CAPTCHA is now much more accessible too: it has a refresh/regenerate button to get a new image if you can't read the one displayed (so you don't have to refresh the entire page), as well as an audible playback option which will generate a sound file 'saying' the displayed code.
Overall it's a great improvement, but more importantly I hope it'll keep the friggin spam off the comments.
Give it a go and let me know what you think, and please definitely let me know if there are any bugs.