I opened the latest pdf file in Foxit Reader and noticed something: big ugly boxes around many (but oddly not all) of the links! That's what I get for not checking it in more apps before uploading.

Anyway, I just fixed that. The new file shouldn't have any borders around links. I didn't change any of actual content, so if you haven't seen way more boxes than there should be, there's probably no need to download the updated file. But if you have, the new one should look a lot better!