Yes, tomatoes are one of the easiest to multiply. Two other plants I do this with are peppers and basil.

Have you noticed the tomatoes becoming seedless as you continue the cloning process?

An old time greenhouse expert once told me he created seedless tomatoes by rooting a cutting, growing till it bloomed, pinching the flowers, cutting it off, rerooting, and repeating the process several times. He claimed the plant forgets how to make seeds. Never tried it myself.