From The Marketing Millennials weekly email: (1) The Endowment Effect is the idea that we value things that we own. A great marketing example is this online wine company sent me an email wanting me to buy a bottle of wine by 11:59 tomorrow. They didn't just say, buy a bottle of wine by 11:59 tomorrow. They said, you have $15 of unused credit in your account, which expires at 11:59 tomo...