This extension when added to your browser adds a dislike button next to the like button on each commentable item and comments (as shown in the pic below) on facebook and shows who disliked it.
On adding this extension, you will be able to Dislike Photos, Status updates, etc...
It's Time for fun! :D Get it now:
How this works:It is working with FDislike's database where they stock the id of the item and the id of the user who dislikes the item.
Only few are familiar with this dislike feature so you cannot see the no. of dislikes for all the posts you see. You can share this article with your friends and make them to add this extension, So that they too can start disliking what they dislike and you can see what your friend's dislike! :)