November 17 is National Unfriend Day

On November 17, 2010, comedian and late-night talk show host Jimmy Kimmel inaugurated National Unfriend Day with an advisory about fairweather Facebook friends.

Test them by asking for help with a move, he said. The people who respond are your friends. No one else. He capped off the proceedings with a public service announcement by William Shatner.

According to data from a 2014 Edison Research report, 58% of Americans are on Facebook and have an average of 350 Facebook friends. A holiday begun as a lark has never been more relevant.

In 2016, Kimmel asked his audience to post on his Facebook page who they had unfriended and why:

Happy National Unfriend Day!