[Answer] 2. How do you, and what does it mean to, "unfriend" a person?

Step 1 : Introduction to the question "2. How do you, and what does it mean to, "unfriend" a person?"

...1. Add them to the site's blacklist 2. Remove them from your list of friends on a social network site 3. Cause their computer to explode by spontaneous combustion 4. Report them to the local authority To allow people to have access to the personal information on your profile page, you need to allow them "friend" status. These may be people that you have never met. If the relationship with a person ends, or if they begin to harass you or your other "friends" on your page, you may need to "unfriend" them. In a nutshell, to "unfriend" someone means to remove them from the list of people who have access to your page.

[Answer] When is 2018's National Unfriend Day?

Step 1 : Introduction to the question "When is 2018's National Unfriend Day?"

...This unofficial holiday gives Facebook users a day in which they can unfriend users who are not truly their friends. It was originally conceived by TV personality Jimmy Kimmel and proposed on November 17, 2010. Kimmel saw it as a way to remind society in general of the true meaning of friendship. Because social media platforms can be a means for theft of personal information in today's digital age, unfriending those who no longer are in steady contact with you, or unknown users that can access your posts, is advisable. Most experts now recommended more face-to-face human interaction over time spent on social media. Source: WinCalendar.com