All I was thinking is that I have a load of 5V wall warts from old devices that I no longer use, many of which have a jack connection. Micro usb connectors are quite tricky to solder to given the pin pitch. Having a quality molded adapter is much more preferable to some hack I could put together, with less risk of having shorts or breaks. Not to mention it is much easier getting a wall wart with 1 amp+ (as most of mine are) compared to most micro usbs that I get with phones rating a paltry 500mA.
It is just a thought what with the rPi going micro usb as well. Come to think of it, I have a few older mini-usb warts – time to check their power output and ebay some adapters.
BTW – I am typing this on my pcDuino :o) It is great, more than fast enough to do a little web browsing!