Growth Hacking
Growth hacking is the experimental discipline of using non-obvious, leverage-driven tactics to drive rapid user or revenue growth, coined by Sean Ellis in 2010. It combines marketing, product, engineering, and data, often by exploiting existing platforms, distribution loops, or product mechanics rather than by spending on traditional advertising. It is the experimental, scrappy ancestor of modern growth marketing, and the term has been so over-claimed that the original meaning is nearly buried.
The canonical historical examples define what growth hacking actually was. Hotmail appended "PS: I love you. Get your free email at Hotmail" to every outgoing message in 1996 and went from zero to 12 million users in 18 months. Airbnb built a Craigslist cross-posting tool in 2009 to let hosts duplicate their listings to Craigslist with one click, riding the larger marketplace's distribution. Dropbox offered 500MB of free storage for both the referrer and the referred friend in 2008, taking signups from 100,000 to 4 million in 15 months. PayPal paid users $10 to sign up and another $10 to refer a friend in 1999 to 2000. The pattern in all of them: a product mechanic that turns each user into a distribution channel for the next user, deployed before any of those tactics were considered standard practice. Today, most of those specific moves are saturated, regulated, or platform-blocked, which is why the term has lost weight. The honest version of the discipline in 2026 is a tight, experiment-driven growth team that runs many small tests against a high-leverage funnel hypothesis. The dishonest version is rebranding paid ads and email blasts as "growth hacks."
Ryan's Take
Growth hacking, as the term was originally meant, is mostly dead, and the people still using the phrase usually mean "marketing without a budget" or "growth marketing with a cooler title." The actual mechanic the original growth hackers exploited (a product loop that recruits the next user inside the product experience itself) is now called product-led growth and lives in product orgs, not marketing departments. If a founder tells me they're going to growth-hack their way to scale, I assume they don't have a plan and they don't have a budget. Both are fixable. Pretending otherwise is not.
What founders get wrong: Confusing tactic with strategy. A clever referral mechanic on a product nobody wants does not produce growth; it produces a longer obituary. Growth hacks worked at Dropbox and Airbnb because the underlying product had already crossed product-market fit and the loop just compounded that demand. Without PMF first, the tactics are just expensive activity.
Related: Growth Marketing · Viral Coefficient · Product Led Growth · Product Market Fit
FAQ
What is growth hacking?
A discipline coined by Sean Ellis in 2010 that combines marketing, product, engineering, and data to discover non-obvious, leverage-driven tactics that drive rapid user or revenue growth, often by exploiting existing platforms, distribution loops, or product mechanics rather than by traditional advertising.
Who coined the term growth hacking?
Sean Ellis, in a 2010 blog post titled "Find a Growth Hacker for Your Startup." Ellis was the first marketing lead at Dropbox and later founded GrowthHackers. The discipline crystallized around the same mechanics he had used at Dropbox and earlier startups.
Is growth hacking still relevant?
The original platform-exploit version is largely saturated or blocked. The underlying philosophy (experiment-driven, full-funnel, leverage-focused) lives on as growth marketing and product-led growth. The label "growth hacking" today is mostly marketing dressing on standard growth work.
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