We recently changed the format of the XML files that the map interface uses to display trips. While it is not really a user-visible change, it will open up new possibilities for viewing and exporting your travel journals.
The format we use now is GeoRSS — Geographically Encoded Objects for RSS feeds. GeoRSS is a standard for encoding geographical information in regular RSS (or Atom) news feeds. We implemented the GeoRSS GML variant, using an Atom feed. Each trip is represented as a news feed so that feed entries correspond to trip entries. In addition to specifying a location for each trip entry, GeoRSS also allows us to encode the GPS track.
Since this is a just an extension of a news feed, you may also open it in your favorite feed reader. As GeoRSS gains recognition, we expect more feed readers to understand and display the geographical tags as well.