I was helping a friend defrost an older freezer. He was going to throwout anything that had freezer burn. While that is sometimes a good idea there are ways to deal with freezer burn.
Freezer burn is basically dehydration. So for a chicken that has freezer burn you can always use it to make stock. The same is true of old beef ribs. You can also cut off the part that is "burned" and cook the rest of the item. If you have a steak that is freezer burned, put it in a marinade. In these difficult financial times we can all use a little reminder on how to save money.
I hope this helps. To avoid freezer burn, wrap the meat or other item so that air cannot get to it. It is the air space that allows the food to dry out and get "burned'.
