It’s something akin to picking stocks. You want to buy undervalued domains, and sell them later on at a higher price. For example, you can pick a domain that is out of favor, but could be related to some future event. So if you decide that the stock market is likely to crash in the future, you can buy a domain that includes the words stock market crash during a rising market, and then sell it in a falling market.
 @dasjung No doubt! I know this and you know this, and any other highly skilled and educated designer will also know this. But what about the customers? The people who are looking for a logo design with much consideration of price in this economy.  Knowledge and talent expect the monetary reimbursement it deserves, but unless everybody has a trained eye to recognize it, they just aren’t going to dish out the money for it. That is the point I am trying to make. It is like calling the neighborhood handyman instead of  a high cost plumber to fix a small leak.
What’s the catch? None, really. Cash back apps act as affiliates for many online merchants, which means that whenever you make a purchase through one of the apps, they get a small commission — but then, they give you a portion of that commission as “cash back”. For example, if I buy a pair of Nike shoes through the Ebates app (or website) and spend $75, Ebates may get a $10 commission but then they’ll pass $7 back to me. It’s basically a way to get sale prices on stuff that isn’t on sale!