The N2Y4 Mobile Challenge and Conference may have come to a close, but the conversations and ideas certainly haven't.  Did you miss the main event May 26-27?  Did you follow along on Twitter or the NetSquared blog?  Well, here's a round up for everyone, pulling together all the bits and pieces to be sure you caught it all!

Check out the winners and find videos, pictures, blogs, and more from the N2Y4 Mobile Challenge Conference below.

Over the last year, a lot has changed in how we access social and environmental information about the products we purchase. A small but growing army of mobile apps have flourished that now help consumers make more informed and "green" decisions. What makes mobile apps so innovative in this space is their potential to help consumers access crucial data at the point of purchase. The idea behind mobile apps is that you can just whip out your cell phone, look up a product while you shop, and make more informed purchase decisions.

These apps raise a lot of interesting questions around best approaches, collaboration, and potentially the limits of mobile technology. Before we dive into the questions, though, let's review some apps!

HopePhones, a new campaign, launched today that enables anyone to provide health services to those in the developing world – by donating your old cell phones!