I'm a bit late to the party but I've just discovered the awesomeness that is Streetpass relays. I've dug out my Pi (model 1 B), dd'd the image to an SD card, plugged in my (new) WiFi dongle (RT5370 chipset) only to find it doesn't work.
lsusb detects the device (Bus 001 Device 004: ID 148f:7601 Ralink Technology, Corp.)
apt-get reports that the drives are up to date. However, the WiFi just isn't working. ifconfig doesn't even list a wlan interface. Any ideas?
[edit]
Hooked the Pi upto my TV to see if there's anything else going on...getting the error messages:
failed to initialise driver 'l80211'
rmdir[crtl_interface]: No such file or directory
&
nl80211: 'nl80211' generic netlink not found
I've edited the config file and changed this to both rt5370 and ralink but got nothing both times (invalid unknown driver: ralink / rt5370)