This feature allows you to downvote any reply that doesn't contribute to the discussion from your point of view. These downvotes will remain only visible to you and Twitter itself so it can use this data internally to sort them better.
The feature is available to me on one account out of three so it is a gradual rollout that will take some time to take an effect.
- 📲 Twitter is a popular social network built around short text messages.
- 📲 Twitter is also available in Beta and you can opt-in as a tester via Google Play.
- 📲 Twitter is also available in Alpha and you can opt-in by joining its Experiments Google Group
- 📲 Follow @TestingCatalog on Twitter for the most recent updates.