What does the software or service do well? It is a really good software for in company communication. You can tag all the team mates in the same chat. Thus saving time there. It is faster to get your question answered here. It is very useful.
What does the software or service not do well? I think there is only one thing that I feel it does not do well. It does not save the chat history. It asks you to buy the paid version to do so.
What do you wish you had known about the software or service before using? I wish I had known about it earlier. Its very easy and great product. I was initially skeptical to use this product over others. But I started using this there is no way going back.