WSJ: San Francisco 94110 Is Really a Hot Spot, My Wi-Fi Tour Shows

"In the end, I counted about 3,000 wireless networks in my ZIP Code. The 2003 population of 94110 was 75,000, meaning we have one Wi-Fi access point for every 25 people."

Despite all that, I still have to pay to get on at my local (94110), independent coffee shop.

Also, I don't lock down my network, but I don't broadcast, so I'm not helping.