Where does one start with such easy to use technology as this? I guess the key thing here is that if it costs you any effort at all then the product isn't doing what it's supposed to. These USB memory sticks should be plug-in and use, no muss no fuss. And basically that's what the CnMemory is - no fuss.
USB memory sticks are so handy and much better for the environment that burning information onto CDs all the time. The 2 GB available on this memory stick is more than enough to copy albums easily and transfer them from one computer to another (within copyright regulations only of course!!!), share photos from a trip with friends, and naturally take any documents that you need to transport wherever you need to go. I have tried copying a movie onto here though that I had downloaded on another laptop, but it wouldn't fit. Therefore if this is your purpose you will want to look for a memory stick with more space. For day to day purposes though the 2 GB is plenty I find.
At around 5 pounds, it isn't a huge investment to get one of these. The size is very small and there's no hook on this model as some others have for keeping it attached to something else - which I guess means that you might lose it more easily if you're careless, but like I said it isn't a huge investment so probably not a problem if you do lose it.
In summary, I've had no issues with this at all and would heartily recommend it.