Like, this kind of BS:
In order to eventually plant the seeds, you will first need to remove them and allow them to ferment. This is a lengthy and often times stinky process, but it is the best way to ensure success. Cut the tomato in half, and remove the seeds and some of the surrounding gelatin. Place the seeds and this material into a sterile, airtight container, and add a spoonful of water. Seal the top of the container with plastic seal and a rubber band, but poke a hole into the top of the seal for circulation. Ferment the seeds in a warm location, like a cabinet. Stir the mixture once a day. After two or three days, your tomato seeds should be ready to remove. Carefully remove the top part of the mixture, and add some water to what remains--seed and some additional materials. Run this through the sieve a few times with water, and you should be left with clean, fermented seeds. It is normal for them to emit a smell which some people consider offensive. Allow the seeds to dry for at least a week.