[matt_wulfeck]

You have to admit, getting people on slack is much easier than getting them to join your irc channel.

[ashark]

Despite having to have Slack for work anyway, I find joining public projects' Slack channels to be too high-commitment, so I never do it. IRC? No problem. I also like that IRC somehow has both a less formal and a lower-BS feel/culture to it.

For non-tech people, yeah, it's probably easier.