While the actual film drew mixed, often heated reactions from genre fans, few deny the entertainment value of this, Myrick and Sanchez's ingenious chronicle of the "legendary" Blair Witch's back story. The "documentary" interweaves interviews with law-enforcement officials, private investigators, local citizens, and friends and neighbors of the three young filmmakers who disappeared in _The Blair Witch Project_ with historical accounts of the witch's wicked alleged exploits

As a mockumentary, it's a bit weak, but as a piece of marketing, it is stone-cold genius. Half the power of the film came from this appendix.