Most fan fiction is unreadable crap, but there are a few authors who can actually write at a professional level, or nearly so. If you like Harry Potter and the very idea of fan fiction doesn't make you turn up your nose, then this next generation story is worth reading. While I didn't like all of the elements Lippert added into the "canon" universe (the Americans and the "quantum" explanation of magic, for instance), it's otherwise very much in the same spirit as the original books.