"Personality" can also mean an important or well-known personage, usually in showbiz, like a radio personality (e.g., Howard Stern). People who rely on their personal charm and "quirks" to make their living could be called personalities. They might give seminars, get paid for speeches, have lots of pictures taken of themselves, and act like they all that and a bag of chips. Once they pass out of vogue, some personalities wither into nonexistence. Others, like Dick Clark, are immortal (and that's not just because of the formaldehyde and MSG they rub into his hide every morning).