WiFiTrak is an interesting tool to see WiFi networks on your iPhone/IPT.

WiFiTrak does a great job showing you the WiFi networks in range of your IPT or iPhone. It does a terrible job connecting to them, however. I've bounced around Arlington and Cambridge and I can't connect to the vast majority of the "open" networks. How is a network "open" if I can't join it? I find it unlikely that every "open" network has MAC address filtering. If they did, I'd argue that the network shouldn't be considered "open".

Nonetheless, it's fun to see all the networks.

The app is pretty unresponsive when you attempt to connect to a network. The "back" button becomes totally unresponsive and I have to hit the home button and restart the app almost every time it fails to connect to a network. And check out this screenshot.

I went from waiting for 30s for a timeout to 29, 28, 27,...,3, 2, 1, 0, -1, -2. I'm not sure what it means when I have -7 seconds to wait for a timeout.