YONKERS - Facebook and Westchester native Mark Zuckerberg are feeling the fallout after the social media site admitted to snooping and gathering data to manipulate its messages.

In 2012, Facebook adjusted the news feeds of 700,000 members to try and see if happy posts made them sadder or happier.

The experiment was based on the premise that people get depressed watching other people's "Kodak moments" on screen.

Dobbs Ferry native Mark Zuckerberg and Facebook didn't ask for permission from the study subjects, but said permission was granted when users agreed to accept the terms of service during signup.

Facebook's "Mood Manipulation Experiment" lasted a week. Facebook isn't revealing which users were affected.