How to Clean a Glass Cooktop

Here is a quick cleaning tip I found on web for glass stove 
cooktops, using basic stuff we have at home: water, dishwashing soap and baking soda. This can help take care 
of burns, stains,spills and make your cooking area shiny! For better results, repeat twice. So why  waste money on chemical products when good ol' baking soda can do the trick?