A new site offers some obvious functionality that Amazon was missing, a way to search for only things with free shipping. I am an Amazon Prime member ($79 / year for unlimited free 2 day shipping on orders of any size). This is great because I am not tempted to by $25 worth of stuff [...]

Consumer’s shopping habits have been put under a microscope and analyzed by the retail industry in order to maximize sales.
Shoppers have been as thoroughly studied as lab rats and the research has resulted in scientifically proven approaches to influence shopper’s emotions, to heighten their insecurities and to trick them in to buying things [...]