Assuming that Apple does disclose this adequately -- meaning they'd be legally in the clear -- I'd still want to know the answers to: How do I delete the records of my searches saved on Apple's serves? (Google lets me delete my search history.) How do I randomize my unique ID? How many FedGov or state/local agencies have showed up demanding info on which users searched for "dirty bombs" or "how to join Al Qaeda?" Does Apple always require a warrant? Etc.
Whether you think that's sufficient or not, at least I have the option. And the last octet in my IP address is automatically modified after 9 months and deleted after 18 months even if I don't do anything. If you can tell me how I can do the same thing with Apple's search log files, and what Apple's IP address retention policy for its search log files, I'd be much obliged...
Separately, Kevin McArthur (author of the Pro PHP book) is reporting this evening on Twitter that Spotlight is harvesting user locations after updating to Yosemite, apparently before the opt-out option is presented: https://twitter.com/KevinSMcArthur/status/523975643340353537 https://twitter.com/KevinSMcArthur/status/523977472627335168