Secondly, they are links to the comment and trackback popup pages with no content! Aaagh!
Luckily, I’ve hacked in a quick workaround which redirects to the main page with the story opened. You can find the details in the b2 forum.
I guess that my workaround is probably the ‘right’ thing to do. A dynamic site such as this should be able to say “Hmmm. This is an inappropriate entry point for an external referer, I’ll redirect to something more appropriate.” Unfortunately, my solution is not quite there yet.