wiPod: Find Free Wi-Fi via your iPod
Sean Bonner blogged about this free guide to Wi-Fi on your iPod way back in July of 2004, but back then only the Bay area was covered, so it was of limited use to most folks.
I am happy to report that the coverage areas have increased dramatically, though I am not sure how complete any of them are. However, even with that caveat this is a pretty cool service that metrofreefi.com is offering up, and I am going to be downloading the Pennsylvania wiPod myself.