Advantages Cheap. Small. Convenient. No batteries.
Disadvantages None really. Maybe could have a key ring added to it.
I am a semi-professional photographer and as such I am always looking for easier ways to back up my photos. Until very recently I carried an Epsom photo storage device that has served me for years and years - but unfortunately it has just died on me and I couldn't afford to buy another new one immediately. I chanced upon the Integral Single Slot USB Compact Flash Adapter and as it just cost £3.99 from Amazon I really thought it was an option for me to be able to back up my photos on my Macbook Air quickly and efficiently. I felt that £3.99 was an incredibly good price and I was very impressed ...