This is also a good summary of approaches people are taking to address this: https://www.sandiegouniontribune.com/business/technology/sd-fi-social-friends-apps

This is also a good summary of approaches people are taking to address this: https://www.sandiegouniontribune.com/business/technology/sd-fi-social-friends-apps-20190107-story.html https://www.sandiegouniontribune.com/business/technology/sd-... No one has succeeded.