In an experiment in London, security firm F-Secure set up on open Wi-Fi network in a busy public area. But there was a hidden, devilish catch. When people connected to the network, they were presented with (the usual) lengthy terms and conditions. Well-hidden was a "Herod Clause," stating that by using this Wi-Fi you were "giving permanent ownership of the user's firstborn child" to F-Secure. Six people clicked through the "Herod Clause" and accepted the terms.

Possible Preaching Angle:

What a potent illustration of the "hidden costs" of so many things and behaviors that we take for granted.