Answer: TWEET

AnswerCrossword Clue
TWEETTwitter posting
TWEETShort online posting
TWEETCertain follower's reading
TWEETSing like the birdies sing
TWEETNoise from the nest
TWEET"Rockin' Robin" refrain word
TWEETCanary call
TWEETParakeet comment
TWEETWhat a little bird told me
TWEETNestling noise
TWEETBirdcage call
TWEETOnline status update limited to 140 characters
TWEETModern posting
TWEETOnline communication of 140 characters or fewer
TWEETSend a message via Twitter
TWEETSing like a canary
TWEETUse Twitter
TWEETType of message first sent in 2006
TWEETBrief message read by one's followers
TWEETSend a brief message, nowadays
tweetto chirp
TWEET140-or-less message
TWEETAviary sound
TWEETBirds do it
TWEETChirp
TWEETChirping sound
TWEETBird sound
TWEETOscine sound
TWEETWord from a bird
TWEETCanary comment
TWEETMicroblogged update
TWEETNestling's noise
TWEETModern message
TWEETBird call
TWEETBird word
TWEETMessage that can't exceed 140 characters
TWEETCry from a nest
TWEETHigh-pitched sound
TWEETSound from a nest
TWEETTwitter message