Yeah ... right
So by your saying free and open wi-fi hotspots are illegal and all those connecting to an open wi-fi anywhere should be jailed, right?
SSID's are broadcasted exactly for that reason: to be picked up and used for identification of the network.
Secondly, unprotected networks exist exactly for that ... so that anyone can connect to them without authentication.
If you want to keep your network private, how hard it is to choose a protection, like WEP or WPA ?