Bottom-line

a bottom-liner is someone who

1. announces upcoming meetings to omni-announce at least 24 hours in advance
2. holds the space by showing up to meetings or finding a replacement if they can't make it
3. ensures meeting notes are posted to the wiki (though often a fellow meeting attendee takes this on)
4. updates the calendar on the wiki with upcoming meetings

Definition from Jenny on July 23 2014, transcribed by Julio