Somebody from these forums suggested to me last year, when I asked this same question, to freeze them whole, as-is. Wrap them up really well in plastic wrap and place in your freezer. When you want to use them, just run the tomato (out of the plastic wrap) under warm water and the skin will peel right off. Chop and use. They are PERFECT in soups, stews, chilis and any other dish that needs to be baked. I swear, I doubted you could do this, but I did and IT WORKS!
Gayle