SYW could've have been good but it's yet another example of poor execution by SHC. It's like the Amazon situation where Sears had the potential to really succeed in the online marketplace but chose petty cost cutting and poor customer service over cementing long term sales.
Some of my credit cards offer rewards for shopping in networks similar to SYW and even my local gas station has a loyalty card with a shopping network. It seems like all the same companies are willing to participate in these networks so it doesn't matter who you shop through. These rewards are usually cash rebates which are more attractive than having to spend points in 2 stores that have both overpriced products and a lack of inventory.
SYW has features these other networks don't have such as the sweeps and the community interaction. That could have distinguished SYW. But no.
Shoddy computer programming led to it being more difficult to purchase on SYW than even Sears.com and Kmart.com. There are always problems with the points and again a lack of customer service back up. Who needs the hassle?