Earlier quoted context omitted.
In 99.9% of cases you don't. It's mostly spam. Facebook is a friend platform, not a stranger platform. Don't use it to message strangers, it's very explicitly not what the platform is designed for.
If email worked this way, the whole thing would collapse, because much of the time, you really do want to receive messages from new people. How would contacting a business work if their email system auto-rejected all messages from people not already known? Sure, spam is a big problem, and that's why we've invented spam filters. Google was able to do that and it works well. Granted, Google is a huge company with lots…
Of course. But Facebook isn't e-mail. A closed system that thrives on heavily weighted social graphs is just nothing like an open standard for arbitrary message exchange.
> Wrong, it's designed to help people get in contact with each other.
Based on what? Have you used Facebook? Everything they do is about building and establishing communities, that's their business and they know it. They do almost nothing to help strangers communicate one-off. We are literally in the middle of a discussion about how Facebook gives low priority to messages from strangers, which is evidence that they have this mentality.