Good blog post on tomatoes - This is a great use for tomatoes that are cracked or are not perfect.
Step 1 - get a lot of bad tomatoes cheap - many CSA's will have tomatoes that are not good enough to get distributed, but still ripe and edible.
Step 2 - Strip the skin(dunk in boiling water for 20 seconds, then dump in ice bath, the skin will literally fall off.
Step 3 - Cut in half and de-seed/juice - you just want flesh. If there are any badly bruised areas you can cut them out also.
Step 4 - Cool
Step 5 - Bag, suck the air out as much as possible
Step 6 - Freeze!
Great tomatoes for Winter and Spring cooking!