"The New Dating No-No: Asking for a Last Name — Now that smartphone apps are the primary way people meet, some things have become too awkward to ask"" — Wall Street Journal A-Hed by Nicole Hong.

Why it matters: "Asking for a last name 'is definitely a modern social cue' that trust is building in a relationship."

• "Tinder and Bumble, another service, typically show only first names."
• "Many millennials say asking directly for a last name on a first date feels awkward, and signals too obviously they intend to scour the internet for biographical information."
• "Others say that downloading a date’s entire digital footprint—armed with the full name—can stop a relationship from developing organically."
• "There are ... tactics, such as taking a peek at an Uber account name or credit card after a date, or asking to exchange social media handles."