The review is from October and the Airlink usb adaptor is no longer available (from Amazon at least), could be that newer versions have a different chipset or something else changed.
It does seem that it’s equipped with a generally supported chipset (Ralink RT2870) BUT there are several Belkin USB adaptors with the same chipset and not all work with the WD TV Live. There are other factors involved and version numbers make a big difference.
That’s why it’s so crucial to refer to an official WD support list, as richUK says, and not some random claims on an Amazon review…
Quick question: what firmware version are you running?
1.01.11 introduced wider support for USB adaptors, so if you’re running 1.01.00 or 1.01.01 you should consider updating.