I have two networks - open network, because I believe Internet should be as accesssible as possible and secure network for my stuff.
I keep open network capped at certain speed, and I block porn (not because I'm antiporn, I just presume some kids might use it to try to circumvent parental restrictions).
And my private network is WPA2 with hidden SSID, and I don't white list MACs, but from time to time I look thru logged MAC/device name combination to spot if someone has broke my password.

Consider then would US companies or govt. buy rather software from US company or let say Polish... //
Piotr.
Software QA specialist at US company whose entire R&D, customer support, etc. is located in Poland :)