CG Cookie has experimented a Slack channel. It was run by Dennis Brown. I don't know if it still exist, last time I visited it was 2 years ago. I removed the Slack app from my system.
Maybe Mark or Phil knows more about it, they were on it too. Dennis, unfortunately, seems to have disappeared, I liked this guy.
It wasn’t such a good idea after all.
I know there is a Discord chat at https://discord.gg/SSJ7Q3T but I dunno if it counts as "good" there are a lot of people there though.
Yeah, the channel moved to Discord. You can find them at https://discord.gg/mrjUPCk The majority of the community at that time found it more appealing than Slack. The people on there are great and provide some solid feedback and quirky conversation.
Blender Chat ---------- https://blender.chat/
Blender IRC channel - https://wiki.blender.org/index.php/Community:Chat
EDIT:
Blender IRC Help ----- https://wiki.blender.org/index.php/Community:Chat/XChat
Blender WebChat: ---- http://webchat.freenode.net/
Blender IRC channel sounds like the kind of place where people would yell at you for using LMB select or Prompt on Quit ;-) I wonder if thats true lol
@Catherine: Once you stop assuming and just go and experience it for yourself,you might be surprised what you can find out / learn there first hand.
TIP: Be sure to read this image before asking questions:
Link to Blender IRC chat - graphic
I intended that as a cheeky response, I thought the emoticon and lol conveyed that but I guess I missed the mark with that joke.