Our main priority with this feature is to create a better experience for our community.
Once you poke the dislike button on a comment, the dislike does not become public.
Only you will be notified.
Neither the author of the comment nor other users will be notified that the comment has been disliked.
Further, you might withdraw your dislike by tapping the button again.
Also, you wont be able to see how many dislikes a comment has received.
This button will appear in addition to the option to report a comment for community guideline violations.
source: www.techworm.net