How to store vegetables in the refrigerator: In plastic bags or not?
Based on what I've been able to locate on the USDA website:
Refrigeration &amp; Food Safety

It would be better to take the foods out of the bags and put them in the crisper if you're using the crisper solely for vegetables:


  Some refrigerators have special features such as adjustable shelves, door bins, crispers, and meat/cheese drawers. These features are designed to make storage of foods more convenient and to provide an optimal storage environment for fruits, vegetables, meats, poultry, and cheese. 


And:


  Sealed crisper drawers provide an optimal storage environment for fruits and vegetables. Vegetables require higher humidity conditions while fruits require lower humidity conditions. Some crispers are equipped with controls to allow the consumer to customize each drawer’s humidity level. 


Therefore, keeping your stuff in the bag would negate the purpose of these specialized compartments. Too bad the USDA doesn't specifically address the issue of bags...