Last year was the first year I attempted to can tomatoes. As I ordered approx. 60lbs of tomatoes, I was able to make all sorts of canned tomato goodies including: chopped tomatoes, tomato ketchup and the most amazing salsa.
I used this recipe from Ferdzy over at Seasonal Ontario Food. If you are even thinking of canning salsa this year, please give this recipe I try. It's the closest to fresh salsa I've ever tasted in a canned salsa. I think it's the lime and the cilantro. Yum-my.