easy to use a pocketavr, just plug it into the USB connector and ISP connector and you're ready.
However, there is a disadvantage:
If you want to use serial.print for example. ,when you want to see what's going on you have to disconnect the avrprogrammer and plug in a USB / Serial converter. And if you want to make changes to your sketch, you must disconnect the USB / serial and connect your avr programs again.
this can be done much simpler by using Coding Badly's TinyISPhttp://arduino.cc/forum/index.php/topic,123388.30.html
With that you can leave all wires where they are, and just open the serial monitor, almost like you're used to from an Arduino Uno