[nl]

This is the second time you've said it's about "hoovering up data".

Yahoo runs one of the biggest ad networks in the world, and you need to register to use Tumblr. They as already have everything they need to track you right there.

A mobile app in many circumstances reduces the data tracking (see this whole discussion about how effective Apple's do not track is because of their monopoly powers).

[dylan604]

Yes, and I'll say every time it comes up too.

Just because Apple made it harder doesn't mean they made it impossible. There's a reason so many places work on making apps for multiple platforms (at least 2) rather than a unified web experience. There are benefits beyond serving a webpage in a native app, and they all want those benefits. Stick your head in the sand and deny it all you want, but it still happens.