if you core the tomatoes, the salsa will be thicker. I like the runny salsa myself

This is just a vague recipe I use (you can adjust amounts to your own tastes):
3 large tomatoes, chopped
3 jalapeno's, seeded and finely diced
1/2 bunch fresh cilantro, chopped
1 bunch green onions, chopped
1T. lime juice
salt and pepper to taste
I also substitute the tomatoes for fruit sometimes and add a couple tablespoons of sugar. My favorite is peach (or nectarine) and mango

YUUUUM.
I also like to make my own chips for dipping. I take corn tortilla shells and cut into 8 wedges - and fry in 375* corn oil until crispy. Sprinkle with a mixture of 50/50 salt/chili powder. These get eaten as fast as I can make them! I made some of these to go with a mexican stew hubby made for a soup contest - and everybody wanted to know my chip making secret. It's so easy, but so yummy!