Seeing as I know my last name to be relatively uncommon, I couldn't resist trying it out. I thought the odds were good that I would be unique. Here's my result:
I wasn't quite prepared to find that there are "1 or fewer people with my name." Logically, since I've entered my name, wouldn't that indicate that there is a minimum of 1? What would fewer than 1 of me would be like? Would I start disappearing like Marty McFly in Back to the Future when he interfered with the meeting of his parents in the past? Or maybe fewer than 1 of me could just involve losing a few pounds I don't really need hanging around. That would be OK.
You can click on the words How many have your name? in the box to find your results.