Free Software Linux

I use BrightKite to update my location via SMS, and it feeds FireEagle, which in turn posts to my lifestream via Movable Type and the Action Streams Plugin. If any of that made sense, keep reading. The problem is that when I send brightkite a message like: @bos It sometimes knows that is Logan Airport in Boston, and sometimes just knows that as BOS, United States, which results in updates like this: Anyone know why this is happening? Brightkite’s fault? Fire Eagle’s fault? Neither?