I got on FB so I could keep in touch with friends from college. Now, all I ever see on it is people posting a picture they found on the Internet or a religious rant or a political fit. Don't care.

Now concerning "jealousy" as it pertains to FB ...

My wife has a bajillion FB friends. She's on it constantly. Well as it turns out:
1. Her single friends wanted her to set up and go to singles mixers.
2. Her ex-boyfriends were finding her online and she was friending those ex-boyfriends who were sending her emails and such.
3. After raising my step-daughter, I find out through FB that she found her deadbeat dad (yes, he's a total deadbeat) and it "filled a void in her life".

Needless to say, I loathe Facebook.

Incidentally, the latest stat I've seen is that FB was named in over 1/3 of divorces in the U.S. in 2011.