Great Tool
I just purchased Sandisk MobileMate SD+ Memory Card Reader. It works with both Mini and Micro SD cards. I have found this gadget quite convenient for being able to get pictures from someone's camera card with little to no hassle.

The size is a little bigger than normal USB flash drives, but in my opinion, the convenience overshadows just about any drawbacks of the device. It is a must-have tool if you deal with SD cards often.

Great device for the price!
I bought this to go with the Sandisk 2GB MicroSD card I purchased off of Amazon as well. The various slots make it confusing at first and note that the card will not go all the way in to read it but it's an easy plug and play device and it was simple enough to drop music and photos onto the card and pop the card into my phone. It also works well if you are looking to use a R4DS and want to get games onto a MicroSD.

Simple but Effective
I use this reader with SD and microSD cards (HC and standard) up to 8 GB. It is easy to use, just plug the card into the reader, and the reader into the USB port of your computer. It transfers files quickly and without any problems. Just does what it is supposed to do.

Great Camera Accessory!
This is a very handy, small SD card reader. Highly recommended accessory for a digital camera.

Very useful
It works great. I wish there was a link between the cap and the body of the stick so the cap would not get lost easily. However the cap may be attached to the back of the stick.