It has come to my attention from a number of parties that the permalinks in my "April Fools" post were only working intermittently. They worked fine for me when I took the two minutes to code the page, but apparently not as well for some people. If you missed it, it was a garden variety Rick-Roll. Sorry for the inconvenience of a prank gone horribly, horribly wrong.
(And yes, the answer to your unspoken question is that due to the nonworking link someone didn't "get" the joke and this resulted in PROBLEMS.)