Also people forget that facebook gets all the metadata. The encryption leaves the length of the messages intact as well as the identities of both parties. A con

Also people forget that facebook gets all the metadata. The encryption leaves the length of the messages intact as well as the identities of both parties. A conversation with someone who is known to be a hairdresser is likely about making an appointment, so maybe the person is interested in ads about hair products. A conversation with a midwife might yield in ads for baby products.