Message
discrete unit of communication intended by the source for consumption by some recipient or group of recipients
public notice
rule
message
reportage
instruction
error message
Active SETI
Unix signal
heartbeat
private message
argument
thank you
refusal
suicide note
consent
Please
clearance
utterance
protest
singing telegram
subliminal stimuli
Miranda warning
scent mark
event
easter egg
chain letter
audio letter
audio letter
Good News
death notification
resource record
Movement Authority
classified advertising
Radiogram
real-time text
V-CAM
electronic spam
denunciation