freezing fresh corn on cob

Vulcaneer wrote:
Take it from the farm directly to the freezer. Put it in plastic grocery bags before freezing. When ready to cook, remove for just long enough for the ears to be removed from the bags. And shuck off the leaves. The entire cob will be frozen. So you boil for 8 minutes and then eat. Best to sugar the boiling water. The corn kernals (outside) will be fully cooked, hot, and delicious.

Curious..I have never heard of freezing this way. How do you know if you have good corn, no bugs etc. Also, how long can you freeze the corn this way? It would take up a lot of room when you freeze a years worth.