Think about THIS before you start going through your list of Facebook friends and defriending people en masse.  The way you treat your VIRTUAL friendships has a huge impact on your ACTUAL friendships.  In a new study by the University of Colorado at Denver, 40% of people say that if someone defriended them on Facebook, they would avoid that person and STOP being friends with them in real life.

Women are more likely to say they'd defriend the person in real life than men.  The top four reasons people give for defriending people are:  Frequent and unimportant posts, polarizing posts, usually about politics or religion, inappropriate, sexist, or racist posts, and boring posts about their kids or food. 

(Phys.org)