On not using Slack for open source
I completely agree with Matthew Rocklin about the suitability of Slack for open source projects:
Real-time chat systems make everyone feel productive (it’s fun to have a face-paced technical conversation with colleagues), but do relatively little for long-term community consensus building, particularly when the users and developers of a project span a variety of institutions and a long range of time.
I created two discussion groups for Rasterio on groups.io because I don't want real-time support chat to suck up all the community's oxygen and because the community's collective wisdom is more powerful when it is searchable. I also don't do live support for my projects on any Slack other than Mapbox's.