I usually travel a LOT, but lately, not so much. We've been working on the Voyager SDK 2.0, the Messaging Platform for our Voyager product.
However, I'm sitting here in PDX Airport at the B Gates and I noticed "Free Wi-Fi" signs up all over. I'm used to paying T-Mobile by the minute when I'm in airports.
I'm always interested in how folks implement their Free WiFi. Often it's a captive portal, meaning your first HTTP Request is redirected to an internal site that provides you info and requires you to "sign" a disclaimer, then you're free to surf.
Take a look at the image to the right (click on it). The captive portal that PDX used is NICE. You get all the standard stuff, but also a map of where you are connected, as well as details about the airport and airport services.
We may be a second-tier city, but I have to give PDX Airport "big ups" for their implementation of features like this. It really is a world class airport.