Sibona found that 40 percent of people surveyed said they would avoid in real life anyone who unfriended them on Facebook. Some 50 percent said they would not avoid the person and the remaining 10 percent were unsure. Women said they would avoid contact more than men.
The study, published this month by the Hawaii International Conference on System Sciences, was based on 582 survey responses gathered via Twitter. Sibona found six factors that predicted whether someone would avoid a person who unfriended them.
Read more here: Facebook Unfriending Has Real Life Consequences: Many Avoid ‘Unfrienders’ in Real Life