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Find an app to fit your shopping habits — and put a little more money into your pocket — whether on groceries, gas, eating out, travel or best all around.
Zazzle is an online marketplace that allows users to create and sell customized products. Learn about its history, business model and products on Wikipedia.
When a customer makes a purchase online, instead of visiting the retailer directly, they may choose to follow a link from a cashback website to generate a monetary reward when buying products or services. The cashback website receives a commission from the retailer that, after the purchase is confirmed, is shared with the customer who made the purchase.
Now, all of your payment platforms exist on one device, as well as your cash-back options. Saving money and earning money now go hand-in-hand, all accessible in the palm of your hand.
The trend in recent years has been “cash back” shopping—an e-commerce phenomenon allowing consumers to earn money for shopping. But what is cash back and why should you care about it?
Hashcash. Hashcash is a proof-of-work system used to limit email spam and denial-of-service attacks. Hashcash was proposed in 1997 by Adam Back [1] and described more formally in Back's 2002 paper "Hashcash - A Denial of Service Counter-Measure". [2] In Hashcash the client has to concatenate a random number with a string several times and hash ...