Community building tool for merchants?

Hi all!

My name is Peter, I'm the founder of InventoryApp.
InventoryApp is a social web application for people to share great articles and products with friends.
I am also thinking of turning it into a potential "community building tool" for traders and brand owners.

What do you think?
Any particular feature you are looking for?

P.S. The application is currently in private beta and is looking for beta testers and comments.
Please, let me help you in your business!