When linking to a page through an image, this link does not register. For example, on my website, I'm linking songs to their albums via a thumbnail of the album cover. But the album is actually isted as an orphaned page because the only link to it is through an image.

http://www.jewelwiki.com/wikka.php?wakka=YouWereMeantForMeCD

(this shows up as an orphaned page, but clearly, each song on the album links back to it in the Appears On section).