Residential WiFi mapping database revealed

Skyhook Wireless has been scanning American neighborhoods for WiFi access points and putting them into a database. So far they've got 16 million detected wireless access points, covering the majority of the U.S. and Canadian population.

Remember again, if computer privacy and security are more important to you than convenience, don't network without wires. Information is out of your control once it hits the airwaves.

Comparison of Prepaid Credit Cards

Ryan Barrett at snarfed.org has an updated essay on protecting your privacy with prepaid credit cards and gift cards.