system
A chat on subreddit /r/wallstreetbets
human
The only benefits were the emojis and Giphy integration, in my opinion. We had Microsoft Teams for free and they wanted to keep Slack. But they were also notorious for literally flushing money down the toilet. 
  
 I guess it makes sense if you only have 10-20 employees at $15 per person a month.

gpt
Hangouts also sucks. My public company uses slack but I can see us moving to teams