We should be making houses and other buildings that don't interfere with wireless signals. Whether that means making them radio invisible or making the whole house into an antenna, I don't know. The point is that all kinds of wireless signals - TV, radio, WiFi, 3G etc - are a huge part of our lives and economy these days. The fact that they get blocked by our ordinary buildings means we have problems everywhere.
Mokalus of Borg
PS - This is probably the civilian application of stealth technology.
PPS - Or those "invisibility cloak" experiments I keep hearing about. Same principle.