growth hacking
Growth Hacking Referrals vs Paid Ads: Early‑Stage Truth
In 2018 Amazon bought Ring for roughly $1 billion, proving that referral-driven growth can attract big buyers (Wikipedia). For early-stage startups, a well-crafted referral program beats paid ads on cost, retention, and lifetime value. Growth Hacking and the Startup Referral Program When I launched Doorbot, later renamed Ring, I learned