This app looks interesting.

This app looks interesting.

Public Notes – See image above. 4 people have this feature enabled
People can share their highlighted passages and written notes in the Kindle version of the book. This might be part of a reading club / social network.
There is a webpage where one can see all the highlighting one made in the book. There is also a page where some of the top highlighted passages are available. Here is the page for the book Content Rules. NOTE: This is an https URL. You might need to be logged in to Amazon to see it.