On a cutting board, cut the tomatoes into bite sized chunks and place into a mixing bowl.
Next take two cucumbers, and julienne them using a mandolin, a julienne slicer or a good, sharp knife (see blog post to find out where you can purchase these); set aside.
Take the other cucumber and chop it into bite sized pieces; add to the bowl with the tomatoes
In a small bowl, combine the oil, lemon juice, shallot, salt, pepper and oregano; stir to combine and pour over tomato/cucumber salad; add the feta and stir again.
On each serving dish, take one sixth of the julienned cucumber and make a nest with it on a dish; top with a serving of the tomato/cucumber salad and a few olives if using.
Repeat with the remaining dishes and serve.*this can also be made on one large platter