[moreentropy]

Another point: AFAIK the Mico USB connector is designed so that if you apply force from the side to a plugged in connector, the plug will deliberately break and the socket/pcb will stay functional.

Edit: I can't relate to those who say Mini USB is more reliable than Micro USB. I've had a lot of trouble with Mini USB connectors and especially cables, especially if I move a connected device i've had lots of short disconnects. This never happened with Micro USB. So.. go Mico USB!!1!

[ronaldx]

Yep, I have had several mini USB ports quickly destroy themselves, to the point that it affected my buying decisions. The accepted answer in the link perfectly explains why.