From Dana Spiegel, Executive Director of NYCwireless, a New York City based non-profit organization that advocates for and enables the growth of public wireless networks.

Wi-Fi Thank You

Wi-Fi Thank You is a place where you can send a thank you message to anyone who provides a free Wi-Fi hotspot.
We believe in free wireless and appreciate the people who provide it!

This is a great idea on how to augment wireless network to provide more user interaction.

Dana also wrote an interesting post Free American Broadband about the state of broadband connections in the US compared to other countries.

Related Posts:

Ubicomp 2005 video: Yellow chairs (video of public interaction with an open WiFi hotspot)
Spanish company, Fon, wants to let wireless internet users share their connection