I have an idea site/online app, but I would like to get some feedback on the project before I start work on it.

The idea I have is to build a site/app that would help people build an organic food menu for themselves. A lot of the food we buy in supermarkets (especially meat and poultry products) are mass produced by large corporations that care more about profit than nutrition. The site would serve as a guide for buying healthy, organic food. It would make recipe suggestions (fetched from other sites), query food options for the person based on their criteria (diet, calory count, vegan etc.), list food products and possibly nearby locations of where they can be bought, and allow users to submit andreview different diets, etc. I got the idea after watching the Food Inc. documentary. Simply put, the site would be a resource for healthy eating. There are still many things to figure out, but I figured discussing the project with others would be a good way to start.

I have worked on similar projects before but I am not confident enough in my abilities as a developer/programmer to complete the project alone, so I happily welcome anybody to join me. I'm thinking of possibly making the project open source.

First, however, I think it'd be a good idea to pan out more precisely what the site would be. Thoughts?