"It's amazing how quickly the norms become established, because when people violate them, people take offense," says Daniel Post Senning, 36, the great-great-grandson of etiquette maven Emily Post.
Senning of Burlington, Vt., is "single and dating" and says he has tried to answer some of these questions in his book Emily Post's Manners in a Digital World, which came out in April.
Not only do many relationships start with a text, but some end that way.
Tone doesn't come through in a text, and that can lead to misunderstandings, especially when a comment gets misconstrued and "your text may not get returned," suggests cyber-relations and netiquette expert Julie Spira of Los Angeles.
She's author of the 2009 book The Perils of Cyber-Dating, which includes a chapter on netiquette.
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