It helped me address questions over the killer's evolving disposal method. I was confused by Jane Doe 4, you see. I had assumed the killer began by decapitating and de-handing the bodies and leaving them in the forest, dumping the extremities on Ocean Parkway, before moving onto dumping the bodies entirely in Ocean Parkway because both Manorville victims had been found. This site argues that Jane Doe 4's murder is in fact a logical step in the killer's evolution, and I buy it.
I have to say, no identities and few clear facts make this a frustrating case. I do wonder what the police are doing holding so many cards close to their chests with this one.