You can’t currently use certain internal links on my blog successfully, because of a hacker.  Any blog using a non-current version of WordPress software is vulnerable to this hacker.  See http://wordpress.org/support/topic/307660?replies=1 for more info.

There should be a special place in hell reserved for computer hackers…

Update: This now appears to be fixed — a mere 8 hours later!  (I did take a couple of fairly long breaks.)