Twitter shuts down CoTweets, an experimental feature that let two users author and publish a tweet in tandem; in a month, CoTweets will show a single author
Context & Ripple Effects
CoTweets had been running as a live test since Twitter began trialing the two-account co-authoring feature in mid-2022, with both accounts tagged on a single tweet — one of several product bets Twitter floated rather than shipped. Its quiet sunset fits an established pattern at the company: the twttr prototype app was shut down alongside threaded replies in 2020 because they made conversations harder to read, and earlier tweetstorm tooling tests from 2017 similarly drifted out of view.
The difference now is the environment: with advertising revenue under visible strain across the platform's recent history, experiments like this get evaluated less as engagement plays and more as maintenance costs.
First-order effects
- Within a month, every previously co-authored tweet collapses to single-author attribution, erasing the second account's tag from the historical record of those posts.
- Accounts that used the format for collaborations — interviews, joint statements, guest takeovers — lose the only native mechanism Twitter offered for shared authorship.
Second-order effects
- Joint-announcement behavior reverts to workarounds: quote tweets, manual tagging in replies, or cross-posting identical text from each account, which fragments reach that a single co-tagged tweet consolidated.
- Any partner integrations or creator workflows built around dual attribution now carry a deprecation they have to engineer around, with no replacement path announced.
Third-order effects
- If the kill-rate on half-shipped features keeps outpacing graduations, Twitter's product identity hardens around its core timeline and posting mechanics, and third-party tools absorb the collaborative formats the platform declines to own.
The trend: Twitter is shifting from broad public experimentation toward pruning marginal features quickly, with cost discipline increasingly deciding which product bets survive.