Twitter is starting a new test. Following the same Reddit dynamic, you are testing downvotes and upvotes for tweets.
At the moment, this is only a research test, to analyze the type of responses that users consider relevant to the conversations they initiate with their tweets. So there is still no certainty that a similar system will be implemented on Twitter.
Twitter implements a voting system for tweets
As mentioned by the team of Twitter, this voting system is already being tested in the iOS app, only for the answers:
Some of you on iOS may see different options to vote up or down on answers. We are testing this to understand the types of responses that seem relevant to you in a conversation, so that we can work on ways to show more of them. Your negative votes are not public, while your positive votes will be shown as I like it.
So while it gives the option to mark a negative vote in a tweet, this option is not intended to influence the option of the rest of the users, so it will not be a public vote. And in the case of the positive vote, it will be visible in the tweet as a Like.
The Twitter team stresses that this is not about adding a “dislike” button. They are only conducting a research test, so the votes will not affect the order of the comments. As you can see in the image above, Twitter is also testing different designs for these new buttons.
Remember that Twitter already offers some options that allow us to moderate the responses to our tweets. Not only can we report if any of the comments are inappropriate, but it also allows us to hide them from the rest of the responses.