Related Clues:

• Writer's target
• One in a waiting room, often
• Certain phone message
• Send a quick message, perhaps
• Contact via cell phone, perhaps
• Visual phone message
• Communicate with without speaking
• Book club member
• Lecturer
• Book lover
• Write by the phone
• 'Where u @?' missive, e.g.
• Bibliophile
• Circulation unit
• Communication that might include 'OMG' and 'TTYL'