Superheroes are all the rage in Hollywood. We've had Batman, Ironman, and soon the Green Hornet featured in action-packed adventures on the big screen. I like to think of sales tax vendors in a similar vein. Without these vendors, we would be at the mercy of rogue tax authorities, with their unwieldy rate changes, jurisdictional gerrymandering and dastardly dizzying product classifications. We would lead dark and dreary lives filled with daily tax rate lookups, rule validation, and infinite audit adjustments. Thank goodness we can reach for the red phone when we get overly taxed.