Facebook Chat Away Message

[Mark Doliner]

Hi Cassandra. Pidgin only sends auto replies on IM protocols that have
historically featured auto replies (and the "auto-reply" preference
only pertains to those IM protocols). Specifically, only AIM and
Zephyr. This is because there's no way to indicate that a message is
an auto-reply on other IM protocols, and they tend to confuse people.

I think the purple plugin pack might include a plugin that adds auto
reply functionality for other protocols. More info at
https://bitbucket.org/rekkanoryo/purple-plugin-pack/wiki/Home