Cleaning Marble Tile?

According to my Queen of Clean book, she says to seal real marble w/ stone sealer when it's new because its very susceptible to stains. Wipe up spills quickly because marble absorbs moisture. It is also easily scratched by grit. Clean it regularly by sweeping it first and then using a soft cloth or sponge w/ a solution of mild liquid soap and warm water to wash it. Do not overwet the marble, instead use damp cloth or sponge and keep sponge clean while you work. It's a good idea to rinse marble and dry it w/ soft cloth after washing. Do not use acidic products such as vinegar or lemon juice as they etch marble. Other things to avoid are scourers and solvent based cleaners. If you find spots that are not responding to washing solution, sprinkle a little 20 Mule Team Borax or baking powder and rub w/ damp cloth or sponge. You can also use a commercial marble polish available at hardware stores and home centers. Hope this helps.