I received my Adafruit WiFi module yesterday. I've tried on two different RPis with no success. I've tried exactly to emulate what is discussed on the Occidentalis page. iwconfig shows only eth0 and lo. My /etc/network/interfaces file has only wlan1 entries. I've tried to manually enter my network ssid and password, even trying the guest one which has no password. In my /etc/udev/rules.d/70.persistent-net.rules file I tried both changing the wlan0 to wlan1 as well as commenting out the line. Neither worked. Truly I am stumped by the black magic required to make this work. I am also confused by why you list some commands (such as iwconfig) that tell me the commands don't even exist unless I preface them with sudo. I was really stumped until I stumbled on that oolie.