You’re missing an end-tag to the italics in http://www.straightdope.com/classics/a2_426.html – it also looks like the italics is completely misplaced to begin with. I’m guessing it was meant for the phrase “missed the introitus” in the previous bullet from where the italics start.
As long as we’re talking about formatting errors, whenever you search the archives and the results include the column Is it true that armadillos carry leprosy?, the question mark in that column’s title and the rest of the search results are bolded, presumably because of an open tag before the question mark.