Pinterest: Engineer Scarcity?
It is late 2010. You are the first Product Manager at Pinterest. The site is a visual "pinboard" for collecting inspiration, and while the growth is steady, it's limited to a tiny, tight-knit community of designers and hobbyists in the Midwest.
Your founder, Ben Silbermann, has a radical belief: Pinterest should feel like a "curated boutique," not a noisy social network. He is terrified that if the site grows too fast, it will be flooded with low-quality internet garbage (memes, ads, spam), which would destroy the visual tranquility that keeps the core users engaged.
However, your seed investors are breathing down your neck. They've seen Instagram and Path explode by opening the gates. They want to see "Hockey Stick" growth metrics by the next board meeting. You have $0 for marketing and a skeleton engineering team.
You must find a way to scale the population without diluting the culture. In the social era of 2010, growth is usually a volume game. You are about to decide if Pinterest will be a mass-market utility or an exclusive club.
The principle: Scarcity is the most powerful tool for engineering early-stage desire.