Over a long enough period of time, a perk can become an expectation. Whether it is complimentary chips and salsa at your favorite Mexican restaurant, or a new toothbrush after you visit the dentist, these extras are now implied. The same lesson is true for consumers who are making more purchases online than ever before. Free shipping, originally a promotion to encourage more business, is becoming the norm, and customers expect it when they check out. A recent article from Logistics Management details how and why free shipping is going to have a permanent place in e-commerce.