I'm not sure I understand the example you gave: 1. What purpose would escrow serve in this example? The user trusts the social media site, and the amount is sm

I'm not sure I understand the example you gave: 1. What purpose would escrow serve in this example? The user trusts the social media site, and the amount is small (like $1). So there's no need for a third party to hold/control the funds and determine when they are released to one party or another. 2. A spammer can just wait until day X+1 to start spamming.