I too was quite surprised when I discovered that the map application on Wigle.net as well as the search and download function is limited to United States data. Just like alexwaller, I am in a country in Europe.
I have found out that my best option for using the data I have collected myself, is to export my entire database into a KML-file and open that KML-file with Google Earth on my laptop. I have also pulled in the csv into Excel to be able to search and sort etc.
Still, I cannot leverage any of the data collected by other Wigle users in my area. And, what makes me even more annoyed is that I agreed to allow Wigle to use the data I collect for Commercial Purposes (and upon making that selection on my Android device, that settings box magically vanished!)
So, somebody from the Wigle crew, please explain this to us: Why the heck can you not provide a search & download interface that allows us to specify areas outside of the United States?
Please note that in the current situation, there is no value for me in uploading and sharing my data: I can't download it afterwards - neither my own data, nor the data of others in my area. You provide a nice app for the wardriving, but you are killing the community-spirit among users outside of the US.
If there is anything I am missing here with regards to how I should use Wigle, please correct me.