Why do people (developers especially) use Slack over IRC?<p>There&#x27;s a very healthy IRC ecosystem at Freenode and some other IRC networks for opensource development.  But now I&#x27;m hearing some developers casually mention that they can be reached on Slack (instead of on IRC) as if that was the default means of communication now.  What advantages does Slack offer over IRC?
Ask HN: Why Slack over IRC?