Interesting approach by OR sheriff
A newspaper (Mail-Tribune of Medford OR) sued Sheriff Mike Winters to obtain the names of CCW permit holders. He opposed on the ground that State law exempts from disclosure info that is related to personal security. The Circuit Court ruled that CCW permits aren't automatically related to security; that must be proven.
Sheriff Rob Gordon came up with a novel idea to deal with the ruling (and the probability that someone would make a similar request of him), and polling CCW holders by mail to ask their reasons for obtaining a permit, and whether they want their data kept private. He also set up a webpage where people can enter their reason and whether they want their records held private.
[Story updated and corrected in light of reader Gordon R. Durand's comment].
Update: as I recall, when another paper tried this sort of story, local firearm rights groups researched and put online all publicly-available data on its editorial staff. Home addresses and phone numbers (obtained from voting registration forms), house size and valuations (from the county assessor's office), etc., etc, etc.. I seem to recall that the paper gained a newfound respect for privacy.