Alex Chitu (via John Gruber):
Google Mine lets you share your belongings with your friends and keep up to date with what your friends are sharing. It enables you to control which of your Google+ Circles you share an item with. It also lets you rate and review the items, upload photos of them and share updates on the Google+ Stream where your friends get to see and comment on them.
Remember: Google is the innovative one, while Apple’s stuff is all derivative. That’s why Google is basically inventing Pinterest and making it work with their Facebook-like product.