Do you have "friends" in social media who really don't need to be on your list? Today is the day to say "Sayonara," thanks to Jimmy Kimmel. On November 17th, 2010, he declared "National Unfriend Day."

Do you have people on your friends list you knew in grade school, haven't seen in 20 years, and will probably never see again? Say goodbye. Is it time to delete that perennial "Gloomy Gus"?

How about the provocateur who's always looking to start an online fight? See ya! Friends are people who enhance our lives, and we, theirs. If folks don't fit those criteria, it may be time to sever ties.

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