It's possible also that earlier murders might have happened through something other than Craigslist, which is a relatively recent phenomenon.
true that! depending on how old the killer is, we really have no idea if these are his first victims. imo, i feel he has others somewhere yet to be found.
i tried looking at nypd's website and for the 5 burroughs they hardly have any missing people listed. it's unbelievable that a city that big has a handful listed.
i wonder how many missing people are actually reported to them?
for prostitutes, its going to be hard to see if some are missing anywhere, as they are hard to track down. they take off on their own, people might not necessarily report them missing. unfortunately this is why serial killers choose them.
the one thing that stands out to me is the calls to barthelemy's family via her cell phone. out of all the victims, she is the only who whose family got harassing calls that we know of. it's almost personal.
why would she be singled out for the killer to call her family to harass them about their missing/deceased daughter?
obviously the killer doesn't like hookers at all. it seems the girls he has targeted didn't have pimps. he may not have known waterman's boyfriend was her pimp and waterman likely didn't tell him.
these working girls seem to take comfort in that he likes his victims small and petite according to this article:
http://gothamist.com/2011/01/30/prostitutes_take_precautions_agains.php
"they're being more careful meeting new johns and
taking comfort in the fact that this latest Long Island serial killer seems to have a thing for girls of a Snooki-sized stature (all of the victims but one were under 5" feet)."
this is really a false comfort for the working girls, the killer may perfect his m.o. and start targeting other sizes. if he uses a taser and stuns them he could gain control as well. this is assuming the killer may be small in stature and wants girls easy to overpower. he could just have a preference for smaller girls, although waterman didn't seem as small as the others.