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To prevent you from bypassing their paywalls by using private tabs.

• nkozyra 9y ago
  What browser doesn't use cookies in private tabs? In chrome it's basically treated like an isolated sandbox, but it will still gladly accept cookies.
  • nilved 9y ago
    Safari uses different cookie jars for each private tab. Chrome uses different jars for each private window. (I believe.)
    • snakeanus 9y ago
      > Chrome uses different jars for each private window. (I believe.) Pretty sure that Firefox does the same.
    • nkozyra 9y ago
      Right, I'm just saying being in a private tab wouldn't prompt a cookie error