Others say...

"terrible product"
the cord does not work. it charges the shuffle but can't transfer data, rendering it pretty much useless. i mean, it is only a usb to a headphone jack, how hard is this to make?

"Didn't work"
didn't work at all. Get the little cordless one instead (White - iPod Shuffle 2nd Generation USB Charger Adapter); that worked.

"Good idea, bad implementation"
I liked that these cables didn't have the big, unnecessary dock that the stock Apple ones have, but their quality is very poor. I ordered two for use at work and on my laptop. They arrived quickly, but neither one works reliably. 90% of the time when I use these cables, I get an error about the USB hub drawing too much current, or Windows can't recognize the USB device. If I use my original cradle, I never have a problem. And since the price to shipping rate ratio is so high, it's not even worth returning them to the seller. If the cables would have worked, this would be a great product. Other people have had success though, so I guess it's just a crap shoot whether it will work for you. Buy at your own risk.

"Work great"
I bought this cable to replace my dock since the dock is not convenient to bring everywhere. Now I use this cable at my office and the dock at my house. And this cable provide the excellent performance as well as the dock.

"Charges, and that's it..."
I ordered this to replace my dock station for my iPod shuffle since it's awkward to carry anywhere with you due to its setup. I always felt like I could just break the jack right off if something heavy hit it...
Anyway, I came across this little number and figured it would get the job done. It's very compact, and can easily be rolled up and tucked away like any other cable. No problem right? Wrong. While it works fine for charging, whenever I tried to upload ANY music on the player it would crash and corrupt my iPod. I tried everything thinking it was my connection or perhaps even my player had finally died, but as soon as I broke out my old dock again and reset its software with that I had no problems. Until I tried to use the new cable again...
I only paid a penny for it plus shipping so it isn't like it's that big of a loss, but I still expect products to fulfill the role they claim to play. Sure I can use it with a charger but it's supposed to replace a dock, not be another piece of equipment to lug around.