I have a number of friends who have children with severe food allergies and they all swear by this Food Allergy Network site.  It's sort of like a FamilyZip for families dealing with severe food allergies.  

The site features all sorts of tips and information about food allergies and common food allergens, as well as a robust FAQ section, books, reference materials, ideas for schools, travel & childcare, info for the newly diagnosed, and even a section for recommended recipes. 

It's a comforting network of parents who are all dealing with similar allergy & anaphalaxis issues.  With food allergies on the rise I thought this one was definitely worth sharing.

Another recommended site is called Kids With Food Allergies