I just received 3 thumbs ups from the same person for the same photo, all at the same time. While I am always honored to have a thumbs up, I don't think you're allowed 3 in the way that I got them. Just checking to see if something is broken.
And if it makes you feel better, I was also scratching my head when I first saw it, too! I had to look much more closely before I realized that they were separate photos!