Andrew Chen's The Cold Start Problem calls it the hard side: in any network, one group is harder to win and does most of the work. In a marketplace it's usually supply. In a consumer brand's loop it's the small group of customers who bring most of the others. Find them before you tune the reward for everyone else.

Every loop in this book had one

• PayPal: eBay sellers. In the second quarter of 2001, 69.6% of payment volume was identified as auction settlements. Sellers asked buyers to pay by PayPal, which did the inviting for the company.
• Whatnot: sellers, recruited by showing them what a night could earn and given one show a day until each was full.
• Binance: referrers who treated the program as a business, and high-volume traders, whom the fee tiers were built to keep.
• OVRLND: the whales, customers with big entry stacks.

The whales

OVRLND's average order fell from $45 in late 2025 to $22 to $24 by mid-2026 as order volume climbed: lots of small buyers, fewer big stacks. A segment of customers with $100-plus orders existed, and the founder's own read was that high spenders weren't being served hard enough.

The plan built them a branch of their own. Customers with an order of $100 or more, or $250 lifetime, stop getting the standard flow. They get a plain-text note and a text from the shop, their rank among entrants (top 3% of stacks, say), 24-hour early access to each new giveaway reveal, and a Founder's Stack bundle in place of the membership pitch.

None of that is a discount. It's status and access: the currencies from Pick the Currency that cost nearly nothing and are worth the most to the people who care most.

Pay the few in status. They're the ones who notice.

Measure the concentration

Rank last year's inviters by referred customers who completed a first order. Then read one number: the share brought by the top tenth.

Say 2,000 customers referred at least one person and the top 200 brought 60% of all referred customers. Those 200 are your sellers. A 20% bump in the reward for everyone mostly pays people who bring one friend a year. A monthly call, an early product, a code with their name on it, or a real share of the revenue they bring does more for the 200.

Seed by hand, then build the system

Whatnot's founders sold on their own first show. PayPal leaned on a dense group that already transacted every day. The common move is manual: go to the few people who already have an audience or a habit, and make the loop work for them one at a time before automating it.

• Call your top 20 inviters. Ask who they told and why. Their answer is your trigger.
• Give them something to show. An early product, a behind-the-scenes look, a rank. Status that can be seen travels.
• Pay them from what they bring. A share of their referrals' margin, Binance style, scales with the value they create.

Do this

• Rank last year's inviters and write down the top tenth's share.
• Call five of the top 20 this month. Write down what they said in their words.