Another tip about storing and freezing in Ziplocs is to lay them as flat as you can in the freezer. That way the bags will freeze flat and can be stacked on top of one another. I've got a stack of frozen turkey broth, frozen tomato paste (doesn't it seem like all recipes only use 2 Tablespoons out of the can?!), and frozen meats. This takes up very little room in my freezer since they're stacked like that.
Again, hope this helps you as much as it has helped me!