It's not, it's an obvious violation of copyright. Outline.com's primary use case is pirating paid-for content. They have a whitelist of domains they support, a

It's not, it's an obvious violation of copyright. Outline.com's primary use case is pirating paid-for content. They have a whitelist of domains they support, and they intentionally implement support for paywalled sites. They're just not big enough yet to where large publishers have started to go after them.