Amazing! That's worth it's weight in gold. I did a cool experiment, laying some slices of a homegrown tomato on top of some potting soil. They dried out but when it rained, it sprouted tons more heirloom tomatoes without any work. Kinda neat! So many heirloom seed varieties are being lost. It's up to us to keep them alive and revive the lost art of seed saving!
I have not done any seed saving yet but I have a book that details how to do it. I agree, that's something we should be doing.