Currently: a letter choosing formal legal vocabulary (/s) to create social network metadata, endorse human activity ("you'd like the recipient to continue doing"), disclose someone else's physical address and record the interaction in the national postal system.

Future, https://continueandpersist.org/terms-of-service-privacy-poli...

  We may share Your personal information in the following situations:

  For business transfers: We may share or transfer Your personal information in connection with, or during negotiations of, any merger, sale of Company assets, financing, or acquisition of all or a portion of Our business to another company.

  With business partners: We may share Your information with Our business partners to offer You certain products, services or promotions.