I've amended the blog's template. I had to get rid of Haloscan comments (sorry if you've got comments for me there, but they're gone now) because you don't get email notification of comments unless you pay for it. And, for some reason, the posts were displaying Blogger comment links on the permalink pages and Haloscan comment links on the 'main' or archive pages.
Anyway, the only way (I could find) to fix it all was to switch to a different template (the lovely "Mr Moto") and fix everything up nice 'n' purdy.
I'm much happier with the new look. The font was always too large before.
Ah! The triumph of style over substance.