For anyone interested in joining our slack, feel free to PM me!
Suggest to use already available open source discussion networks such as freenode and open software with accessible medium such as mailing lists powered by mailman and its archives.
If you insist on using a javascript-tainted webui for community discussions, use open forum software such as discourse ensuring it's properly searchable and archived by major search engines.
It's gotten really good since the last time I looked at it.
It's just the few times I've used slack as part of an open community it's been suboptimal, honestly a freenode channel was and is better, anyone looking at something like Talos is likely to have an irc client installed :).