Comment by rekshaw

The article is interesting, but what intrigued me the most was the carefully coordinated marketing:

- Medium article to capture inbound and not make it look like an ad, but a "We want to share this discovery with you"

- Hacker News submission to get audience

- (probably) team upvote boost to trigger front page

- 50% off promotion ending in ~4 hours with the tagline "you'll never see this offer again".

Cost of advertising: $0. Nice job!