[pmontra]

You can't beat free. That would result in a huge migration to FB Messenger (does it have groups?) and Telegram (which has much better groups anyway) and others.

[lloeki]

> Messenger (does it have groups?)

Yes, and they're a PITA on so many levels. Also, Messenger already has ads.

> Telegram (which has much better groups anyway)

Yes, groups, and especially supergroups (which are highly reminiscent of IRC) are downright awesome.