Slack is a popular tool for team interaction. To describe it quickly, it's a feature-rich persistent chat room, with threads, multimedia, alerts, etc. There is a web interface, a desktop app, and a mobile app.
In addition to Twitter, which is also extremely popular in the SQL Server community, there are a couple Slacks to be aware of, specifically setup for the SQL Server community:
- pass-slack.slack.com - the international PASS Community
- Signup: https://dbatools.io/slack/
- sqlcommunity.slack.com - general SQL Server community
- Signup: https://sqlps.io/slack/
- passscrl.slack.com - The PASS South Central region leadership
- Signup: email for an invitation: rm.us-southcentral@pass.org
- https://batonrouge.slack.com/ - developers, designers, marketers, business people, hobbyists, students, and other professionals involved in technology in Baton Rouge
- Signup: https://brslack.com/