As long as we went off on wireless...
Lack of SSID broadcast will only take you so far, anyway. Yeah, it's a mentality, as j0rdy said, of 'security through obscurity,' and ultimately, if you're going to be hit by a hacker, stopping broadcast will only give you a moment of security, as if an attacker is using good tools, the first time your client connects to the AP, they're GOING to have your SSID, anyway.
Wireless security really needs to include WPA2, MAC filtering, time and access permission configuration, and if you really want to be 'safe,' you should be using some sort of VPN or client auth mechanism in addition to the wireless. Wireless, in and of itself, can only be secured so far (WPA2 is a pretty good start,) so putting that extra gateway / VPN behind the wireless router will add that extra layer of 'OOMPF' behind it all.
~ hayabusa ~
"All men can see these tactics whereby I conquer, but what none can see is the strategy out of which victory is evolved." - Sun Tzu, 'The Art of War'
OSCE, OSCP , GPEN, C|EH