[RyanZAG]

They added 'angry' ? That looks very much the same as 'dislike' to me. He doesn't bring it up in his message either so it was probably a late addition.

I have a feeling 'angry' will be used whenever you don't like what someone is saying: it's the same thing?

[MichaelGG]

Angry's for when someone posts something bad, like "Boss fired me for not sleeping with him".

If you use Angry for dislike, you're inviting mockery. "Oh, this got you angry? haha loser".