Grabbing images of women from social media, and aggregating them without their consent, is not necessarily illegal, but it's certainly exploitative and creepy.
The pictures are one thing and bad enough. Including location and links to profiles could make you a party to stalking or worse, and that is quite unethical.
I took a whack at articulating _why_ it's wrong while not quite fitting a clear definition of malfeasance here: https://news.ycombinator.com/item?id=27632365