What's not to like?
I can utilize the 'Like' feature (link? button?) in some forums but not others. For example, I've repeatedly and unsuccessfully tried to 'like' two posts in the Hilton forum yesterday and today. OTOH I just successfully 'liked' a post in the Community forum.
I've tried with Firefox and Edge on my desktop and my cell phone (I still use the desktop version).
I apologize if this has been discussed elsewhere, but 'like' is too short to allow a search.
I do find it to be an efficient feature as opposed to cluttering a thread with a post that consists of an emoji.