The European pricing article in TidBITS-168 prompted a tremendous response, which I've forwarded in part to various groups, where I hope the discussion will continue. It's difficult and time-consuming for me to repost comments so please, consider posting comments to a group before sending them to me personally. If you do send them to me, please note if you DON'T want me to repost them anywhere (I avoid anything that's obviously sensitive, but I'm not omniscient).
Option-Click AirPort Menu for Network Details
If you hold down the Option key while clicking the AirPort menu in Mac OS X 10.5 Leopard, you'll see not just the names of nearby Wi-Fi networks, but additional details about the selected network. Details include the MAC address of the network, the channel used by the base station, the signal strength (a negative number; the closer to zero it is, the stronger the signal), and the transmit rate in megabits per second showing actual network throughput. If you hover the cursor over the name of a network to which you're not connected, a little yellow pop-up shows the signal strength and type of encryption.