Looks like there's a small bug with the way URL encoding works in quotes/replies...
This post was created with the check boxes and the "quote checked" button (I expect that the button's the pertinent part of the post). Part of the original quote had a "name>" in it... after I posted, I noticed that the greater-than symbol had been translated in to its HTML-equivalent, ampersand-g-t-semicolon (>) inside the quote... not quite correct.