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What would really be useful is for one to be able to specify a common location for a cache file that multiple users could reference...for example, in a corporate LAN, a common cache on a local server. Some corporates charge for bandwidth used. I've tried using a network location but the program isn't multi-user enabled w.r.t. cache data.


I am not sure that there is an answer here, but for corporate sharing of cache, adding your own database, check the Google Earth Enterprise Client. If a business is using GE, it is likely that they can justify the extra $s to get the results that they are looking for.
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-------------------- With no known exceptions, the cost of internal trust, efficiency and loyalty is external distrust. The "us against them" is not an optional feature, if there were some way to preserve the loyalties and the tremendous benefits of internal trust without paying the cost of the ferocious xenophobia, then that would be just what we want to do. But we don't know how to do that. --Daniel Dennett http://www.abc.net.au/rn/allinthemind/stories/2007/1812733.htm