For me it is the opposite. Many programmers in the Haskell and Machine Learning/Scientific Computing communities use twitter and post useful tidbits all the ti

For me it is the opposite. Many programmers in the Haskell and Machine Learning/Scientific Computing communities use twitter and post useful tidbits all the time. Facebook is full of my older aunts/uncles/grandparents posting memes and inviting me to play useless games. While most of my friends are on Facebook none of them actually post to it. Then again I am 30 years old, the Facebook of a younger person may be very different.