I couldn't, for the life of me, get WordPress to correctly show my category links. I'm using redirects on IIS (for the sake of having pretty permalinks), and every time I'd hit "Previous Entries" it would add an excess /domain/ to the url (and that page didn't exist) so it would redirect me back to the home page. Very frustrating. I've been gnashing my teeth for ages over this and was about to go back to the ugly permalinks (which have always worked fine for me) but this amazing plugin miraculously fixed the problems for me (whatever it did). THANK YOU!