This sounds like a very good app, particularly for the bear drinkers. An awesome way to share some vital info about beer. However, here are my opinions (pros and cons) about the product.

Pros.

1. It could provide a way to make new friends of common interest.
2. It can aid the user to discover new brand of beers that are unknown to them prior to using the app.

Cons.

1. It can cause an unusual addiction to beer drinking in its users.
2. It creates a hunter sense in beer drinkers which can be awful to their personal lives.
3. It could turn beer drinking into a competition instead of a pleasurable act.