1) Heat the oil in a large saute pan. Add the bread and salt; cook over low to medium heat, tossing frequently, for 10 minutes, or until nicely browned. Add more oil as needed. 2) In a large bowl, mix the tomatoes, cucumber, peppers, onion, basil and capers. Add the bread cubes and season liberally with salt and pepper. 3) For the vinaigrette, whisk all the ingredients together. Toss the salad with the vinaigrette and serve, or allow the salad to sit for about half an hour for the flavours to blend.