I had JUST posted with two of my family photos here, asking RootsChatters if they resemble each other! I tried doing it at Family Search. Before I mastered the art of pulling out the correct individual from a group photo, it compared the young man to the Husband of the woman I wanted to have it compared to! FS said 34% resemblance to the woman who might possibly be his mother. Which is nice….except FS found a 38% resemblance to the man who is not related to the young man at all. This experience has shaken my faith in Family Search photo comparison software, if I had any faith to begin with….