What was changed
By 2016 Twitter's growth had stalled: revenue rose just 14% to $2.53B with a $457M net loss, and 2017 revenue fell 3%. User growth flatlined as spam, abuse and a confusing product drove people away, and advertisers hesitated.
Dorsey's answer was to fix the basics: clean up the health of the conversation by removing spam and abuse, simplify the product around the home timeline and notifications, and push live video. Costs were controlled while the product work continued.
The turn showed up in 2018, when revenue jumped 25% to $3.04B and Twitter posted its first annual GAAP profit of $1.21B. In 2019 revenue rose another 14% to $3.46B, net income reached $1.47B, and Q4 monetizable DAU grew 21% year over year to 152M.
What it achieved
2019 revenue $3.46B (+14%) and net income $1.47B; Q4 mDAU up 21% to 152M after 2018's first annual GAAP profit.
Why it worked
Cleaning up abuse and spam rebuilt trust with users and advertisers.
A more relevant home timeline and notifications lifted daily usage.
Cost discipline turned operating leverage into profit.
The company reset success metrics around mDAU instead of MAU.
What can be applied
For a platform in decline, fixing trust and the core product comes first; monetization follows once engagement reaccelerates.
Aftermath
2020's ad downturn produced another loss, then revenue hit $5.08B in 2021. Elon Musk's $44B takeover in 2022 ended Twitter's public-company chapter, but the 2018-2019 recovery remains the clearest example of a platform turning growth around by fixing health and product first.
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