This amazingly informative application provides you with random tips for using baking soda in and around your home.  There are 101 tips included, examples include:

"To remove collar rings on shirts, try mixing a little baking soda and water and rub it on the stained area.  Then, right before plaing in the washer, pour a little vinegar on top to make it bubble.  It will eat into the stain but won't harm the material."

and

"Use as a scrub to get out nasty stains from your plastic storage containers."