And although Mozilla, IE, and SharpReader Do The Right Thing here, Bloglines doesn’t. Of course, it’s hard to know what The Right Thing actually is here. When I said DTRT above, I really meant Do What I Mean (which of course is always The Right Thing!)
Fixing this problem turns out to be non-trivial. I’m using Marty’s MT Kwiki Plugin, but it doesn’t really do anything except run the text through CGI::Kwiki. A little investigation on our internal wiki reveals that the problem lies somewhere in CGI::Kwiki itself, as the same problem shows up there too.