I don't see it as that strange. We used a doll specially designed to help model potty-training (for girls), and this might be something that would help two-year-old boys get the idea (especially if they didn't have a daddy around). And for families who don't have any boys, this might take the "forbidden knowledge" or "ew" factor out of teaching girls what boys really look like.
That's the trouble with being on top of everything new. So many times I find something that's "hot" today on the internet, and it turns out Alex or someone else here posted it months ago. But that's why Neatorama is the "go-to" site!
David, me too. These aren't half-and-half, since that would be way too difficult to sync up. Most are part of one face inserted into a full photo of another person.
I would have gotten it years ago if I didn't keep moving to different states with different donation services.