Warning before external link

[codinghorror (Jeff Atwood)]

We also have this old topic on the matter

Preventing malicious linking

Continuing the discussion from How Coinbase Uses Discourse to Educate Customers and Improve SEO: If I understand, that warning would be shown to anyone who clicks on a link posted by a TL0 user? What if a TL0 users posts a link to one of our KB articles, or StackOverflow, or Wikipedia? I suppose we could whitelist domains, but it seems like all users are being punished instead of the new user being asked to gain trust. If that was only shown until moderator review, it could work.