Slack is great. The valuation makes sense and I wish them continued success. All the integrations, and workflows that Slack has enabled for our company make us more productive. I would hate to go back to what came before it. IRC is complete trash and I don't know why anyone would use it in the same sentence as Slack. UX matters. It matters A LOT.
What's wrong with the UX of IRC? IRC is a protocol, not a specific client, and it supports a wide variety of server and client plugins. We had a really nice IRC going productively for a year or two, but we scrapped it because only our software developer used it and other people in the company preferred something else (they used a mix of email, Google chat/hangouts, and text). The nice thing about IRC is that everyone…
One sentence later:
> ...we scrapped it because only our software developer used it and other people in the company preferred something else (they used a mix of email, Google chat/hangouts, and text).
Clearly something was wrong with the UX if only one person was willing to use it?
This place is a parody of itself sometimes.