World's population grow fast and practically no new first or last names have been introduced in the last years, therefore the chances of having another person with your exact same first and last names and more exposure than you is growing exponentially. Plus, thanks to the Internet, if someone with name X does something "remarkable" that name X will be associated to that individual forever, creating a "digital shadow" over those future individuals with the same name.
I remember someone who had my exact same first and last name, and he had bought the domain [fist_name][last_name].com ... The annoying problem was that person was also a developer and his website was awful. I was always worried that someone could google me, find his site and, as he was a developer too, think that poor site was mine.