facebook started out as Lifelog a DARPA Project. The easy way for the CIA to spy on you. Google it
Hello Sparky
I'm afraid the data mining is bigger then just facebook ie from Wikipedia it states:
PRISM is a code name for a program under which the United States National Security Agency (NSA) collects Internet communications from various US Internet companies.[1][2][3] The program is also known by the SIGAD US-984XN.[4][5] PRISM collects stored Internet communications based on demands made to Internet companies such as Google LLC under Section 702 of the FISA Amendments Act of 2008 to turn over any data that match court-approved search terms.[6] The NSA can use these PRISM requests to target communications that were encrypted when they traveled across the Internet backbone, to focus on stored data that telecommunication filtering systems discarded earlier,[7][8] and to get data that is easier to handle, among other things.[9] ..........
The documents identified several technology companies as participants in the PRISM program, including Microsoft in 2007, Yahoo! in 2008, Google in 2009,

facebook

in 2009, Paltalk in 2009, YouTube in 2010, AOL in 2011, Skype in 2011 and Apple in 2012.[22] The speaker's notes in the briefing document reviewed by The Washington Post indicated that "98 percent of PRISM production is based on Yahoo, Google, and Microsoft".[1]
Here in New Zealand we do our bit as a 'Five Eyes' partner being a member of AUSCANNZUKUS"
which Wiki states:
"is an abbreviation for the naval Command, Control, Communications and Computers (C4) interoperability organization involving the Anglosphere nations of Australia, Canada, New Zealand, the United Kingdom, and the United States. It is also used as security caveat in the UKUSA Community, where it is also known as "Five Eyes".
There all watching and listening but as a humble aeromodeller I don't think I have anything to 'share' that would interest them !

Regards Gerald