I took two of these on my recent trip to Africa (in case one broke) as a replacement for the chargers for my camera batteries, mobile phone, ipod, electronic cigarette, bluetooth headset and Hyperdrive photo storage device.
The inclusion of the USB charging port is the key difference between this charger and similar products. As the miini-USB port becomes the standard for charging portable electronics (all mobile phone companies have now agreed to adopt it) the need to carry a load of different chargers is disappearing. This product means I need only one charging device for everything.
It's just a shame it's so expensive.