Yosemite can automatically collect your location information

Apple introduced a nice feature:

http://www.washingtonpost.com/blogs/the-switch/wp/2014/10/20/apples-mac-computers-can-automatically-collect-your-location-information/

In short: every single local search in spotlight is sent to Cupertino. That includes of course search for a file, person, company, etc. Nice.

It is not a secret function, because it is mentioned in the Yosemite’s licence:
http://www.theregister.co.uk/2014/10/20/apple_spotlight_privacy_qualms/

You can disable it if you like: https://fix-macosx.com/