I noticed some great looking Base Layers on http://extract.bbbike.org/ and am curious where to find some of them:
Does anyone know if these are downloadable for personal use? Also, I see google maps satellite imagery is listed as a Base Layer. I’m guessing a Map Proxy is used to display this data directly from Google? Is that correct?
Are these Base Layers just WMS layers that are displayed by Open Layers? Or are some of them actually imported into a local GIS aware database the same way OSM data is imported?