Public Relations: At a party, you see a gorgeous girl. You get up and straighten your tie; you walk up to her, pour her a drink. You open the door for her, offer her a ride, and then say, "By the way, I'm rich. Will you marry me?"
Advertising: You're at a party with a bunch of friends and you see a gorgeous girl. One of your friends goes up to her, points at you, and says, "He's rich. Marry him."
Journalism: As you join the party, you see PR and Advertising quarrelling over the prettiest girl there. You swing by, give her the look, throw her a line (or your byline — you're a journalist, after all!). And she says, "Marry me."
- An excerpt from a Facebook conversation of March 9, 2011.