I've just made the switch to freebsd finally and I've got almost everything working other then my wireless. I have a tl-wn727 usb dongle which uses the ralink rt2870 chipset. I tried this: http://forums.freebsd.org/showthread.php?t=7010 and this: http://forums.freebsd.org/showthread.php?t=7562&highlight=ralink

The first one didn't work at all, no device called rt2870. The latter sort of works. If I plug it in the run0 device is created, then I can run ifconfig wlan0 create wlandev run0 && ifconfig wlan0 up scan which works but if I try to use wpa_supplicant I get stuff like this:

Starting AP scan (broadcast SSID)
EAPOL: disable timer tick
Received 0 bytes of scan results (0 BSSes)
Scan results: 0
CTRL-EVENT-SCAN-RESULTS
Selecting BSS from priority group 0
Try to find WPA-enabled AP
Try to find non-WPA AP
No suitable AP found.
Setting scan request: 5 sec 0 usec

I though dmesg might be useful:

ugen8.2: <Ralink> at usbus8
run0: <1.0> on usbus8
run0: MAC/BBP RT3070 (rev 0x0200), RF RT3020 (MIMO 1T1R), address 00:21:53:dd:3r:3r
run0: firmware RT2870 loaded
wlan0: Ethernet address: 00:21:27:cc:3d:3d
wlan0: link state changed to UP
wlan0: link state changed to DOWN
ifa_add_loopback_route: insertion failed