The Slack instance I use the most is a private one. The other is a Swedish one for programmers.

My accounts on Twitter and Mastodon are public though! See my profile for links, and feel free to reach out if you also have Twitter/Mastodon :)

I also have some curated lists on Twitter: https://twitter.com/giffengrabber/lists (that was on my old account so unfortunately I can no longer update those lists)