If the square that occurs which borders just above the eyebrows and just above the bottom of the chin means anything, they do their own cropping.
There's that.
Always.
They say they don't store the images... ha ha. I wouldn't be surprised if they've got them somehow linked to my machine or other ISP ID.
I believe that "square" is just the facial recognition software doing the same thing your camera does if you have "facial recognition" turned on. It'll mark a face if it finds one. Cropping to eliminate false targets will give the software a better chance to work.
While the site may have some nefarious big brother purpose, I wasn't too worried. Between social media and all the "people locator" sites out there, if you google someone's name, you can already get their age, address, even the info on the last car they bought down to the VIN. And that's just the free stuff. For those worried about their image being used in tracking software, if you're on Facebook, linkedin, etc., there's already probably an image out there that "they" can use, and it's already tied to your personal info, unlike this site, which will take pictures with no identifying info (as long as you don't provide any in the image name or exif).