A walled garden is a site that degrades significantly or is unavailable without an account, like Twitter. Anyone can view all of HN modulo dead comments without an account.
I appreciate the clarification, thanks. This forum is open to the public at the moment. Though Hackernews could go down or take the conversation offline at any moment (this is an issue of trust more than anything, and I think HN does a good job, certainly more than Twitter)
A walled garden is a site that degrades significantly or is unavailable without an account, like Twitter. Anyone can view all of HN modulo dead comments without an account.
You can have a fully open source walled garden.