Hypothes.is is a very good annotation methods, to keep the notes on almost everything you can read via a browsers, such as web pages, pdf, epub, etc.

While doing research, the annotation on pdf is a great part of the work. Adobe pdf readers, and others, bound the users and annotations on a single file, and changes the file. This prevent the readers collect all his annotations, and also prevent the communication of annotations among people.

Hypothes.is has solved the above problem.

So it would be great, if jabref could integrate the hypothes.is to enable a great feature on annotations and collaboration.