This is a quick analysis of the wait list process for Robinhood.com. The currently have over 300,000 people on a wait list for a stock brokerage related product and are adding more than 1,000 people per day - and the product isn't available yet. In a recent interview, one the team members claims about half of their signups have come through tracked links (that include referral incentives). Worth studying if you are launching a product.