Shiney.

So what exactly does Hypothes.is get out of this annotation processes?

So its tagging. Or adding on notes.

Basically from what I see you get to add comments as if it were a word document.

Added bonus, you can do LaTeX math: $$\cos (2\theta) = \cos^2 \theta - \sin^2 \theta$$

So, no BibTex integration either.

So a person could add math, but not a BibTeX reference of where that math comes from.

Disappointing.

What it looks like is a method of funnelling users from other web pages through Hypothes.is website for data collection.

To grab user generated content related to external web content.

It would be a powerful tool to map network connections...but, we won't know. Since we can't actually cite anything.