Whaaaat?

I was cruising imdb (doing Mean Girls research for a bet between my roommate and I) and I ended up on Lizzy Caplan's profile.  I found this post of a person insisting that Katy Perry, Lizzy Caplan, Zooey Deschanel, and Emily Blunt could all be related.  To prove their point (kind of?) they morphed all of their faces together here.  They also have individuals here.  This sounds like it would be cooler than it is.  It seems like all this website does is put two pictures on top of each other an lower the opacity.