Sorry, yes, I had the wrong tab open for that message and attributed it to you by mistake.
> * Chat should not be a central component of an open source project, but an 'extra' for occasional real time communications.
I generally agree that chat shouldn't matter enormously but the problem is that we don't really have a great free alternative. Slack has an interesting hybrid which is largely chat but with some elements which are closer to mailing list style (persistence, search, rich formatting, quasi-attachments) and the only other alternatives I see people regularly using are Google Groups or Git Hub issue tracker, neither of which are open.
The big problem is infrastructure: once we start talking about building a consistent experience with an open project, that means running servers, handling security and support work, etc. That's not a problem for well-staffed projects but it's an ongoing hassle for smaller projects. This would seem like a good place for a non-profit to provide infrastructure.
> If important stuff happens there, it will alienate people who can't participate because of time zones or other reasons.
Interestingly, this is a major reason I see cited in _favor_ of Slack. With IRC, you aren't involved if you weren't logged when a conversation started but with Slack you still receive notifications and can view or search the history.