[ihuman]

I primarily use it as a way to chat with people I know. Since most people I know use it, it is the most convenient platform to do so on.

[datboitom]

Same, if FB had a standalone chat app, I'd just use that and really never go on the site.

[ihuman]

It does, but only on iOS. "Facebook Messenger"

[christianmann]

Last time I checked, it supported XMPP.