> I keep in touch with most people by texting. It does the job. That requires giving your phone number to someone. I can imagine there's many situations where

> I keep in touch with most people by texting. It does the job. That requires giving your phone number to someone. I can imagine there's many situations where you'd be happy to have a casual social relationship with someone but not want them to have your phone number (and that's not even considering the potential for stalking, etc.)