Does anyone know of communities or other resources to share regional products (in the us)?

Probably limit to the us for feasibility: i want to find out about regional products but also have a chance of getting interesting ones.

For example I recently found about two flavors of soda available in parts of the us but not where I am (Peach Crush, Cactus Cooler). I was able to order online to try them!

What else is regional to you that someone may like? Any communities? Links? Online resources to help?