Jakob Greenfeld
Jakob Greenfeld is a theoretical-physics PhD turned indie hacker who kickstarted his career with a self-designed Bootstrap MBA: 12 projects in 12 months plus daily homework like publishing a tweet and writing down 10 ideas every day. He has shipped a stream of micro-products (Gum Spy, Newsletter Spy, What to Tweet, Tweets on Demand, the Damn Good Leads agency), writes essays on permissionless entrepreneurship at jakobgreenfeld.com, and grew to 22.6k followers on X with multiple newsletters past 1,000 subscribers. His signature growth moves are signing every product with a made-by badge, engineering early engagement through genuine creator friendships, and testing channel-offer fit per product instead of chasing a single audience.
- A Made-By Badge That Landed a Podcast Shoutout — a tiny made-by badge on every product page turned a podcast host’s discovery into dozens of sales and hundreds of followers
- Befriend Five Creators to Clear the Initial Barrier — win the 5-20 early upvotes every algorithm demands by supporting a handful of creators until real friendships form
- The Box Got Bigger but Remained a Box — his Product Ideas newsletter needed two rebrands because a niched-down name locks you in a topic box
- A Tweet Every Day to Stay Findable — daily posting plus findable email and open DMs as homework that keeps inbound opportunities flowing
- Two Followers Named Elon Musk and Paul Graham — judge an audience by who is in it, not its size; publish only earned first-hand insight
- A 90-Minute Tool That Hit Number 2 on Product Hunt — a tiny free tool built in 90 minutes as side-project marketing that feeds the personal brand and unrelated paid products
- Channel-Offer Fit Beats Product-Market Fit — decompose growth into a channel variable and an offer variable and test both per product
- Master One Distribution Channel First — pick one distribution channel, master it via agency work, then only build products that channel can carry
- Growth Playbooks Decay With Every Copying Cohort — each cohort copying a growth tactic gets a fraction of the original results, so hunt new tactics or ride a fresh wave