Facebook has introduced a new set of stickers for the Facebook Messenger service. These are all variations of the famous Facebook Like icon showing a thumbs up gesture, with the hand showing other gestures, including a much requested thumbs down or Dislike gesture that Facebook would probably never implement on their site. So you can’t yet Dislike a post but now you can at least send them a sticker on Messenger.
For those not aware of Facebook stickers (or are possibly embarrassed to admit), these are small static or animated images that you can insert in your chat. They come in packs with a particular theme, such as the Pusheen pack or the Cut the Rope pack and you have to download them from within the Messenger app to use them in your chat. This feature isn’t particularly new and several IM apps have been using it for a while now but Facebook only introduced it earlier this year.
You will find the new Likes pack in the store section of Facebook Messenger sticker drawer.



Source: http://mblog.gsmarena.com/new-facebook-messenger-stickers-give-you-the-dislike-button-you-always-wanted/