If you use Buffer, they have a Slack community (that’s really fab!).
If you’re a Peep with CloudPeeps (marketing/content/social media/community professionals), they too have a Slack for their remote work community.
I’ve noticed a worrisome trend in San Francisco. It goes something like this: You’re walking down the street with Jim. In the distance you see your friend Sarah. You wave and introduce Sarah to Jim: