Is the wifi AP database downloadable somewhere (OSM/Wikipedia style) or is it "cloudlocked" (we can only query it through the API) ?
I'd love to play with the raw data too, but I understand their concern. So far many "anonymous" large data dumps ended up exposing too much (e.g. recently NY taxi data).
You linked to the download page where there's only the Cell Networks database.
I wrote about some of the topics a while back. Not all of it is up-to-date but it gives the broader context: http://blog.hannosch.eu/2013/12/mozilla-location-service-wha...
https://github.com/mozilla/ichnaea/issues/330
In a nutshell though, we don't know how to do this yet without creating a privacy nightmare.