I agree that it is a layer of security. Though, it is a pretty thin layer. Just like MAC filtering. People can sniff the MACs and spoof a valid mac easily. Thats why its good to use WPA and a VPN or some other authentication server (radius).

I've just found the disabling of the SSID to be more troublesome than its worth. Just my eperience. Your milage may vary.

But, for a home network... then the regular precautions should be fine. I'd just never deploy it at a place of business. Or my house... I'm not the normal user...