I don't know that any friends of relatives of mine would call 911, but there's a couple who just live on there. My obnoxious SIL, who's about 300 pounds and always having health problems and surgery, posts all day long. Her posts are recipes, articles about food, and the latest information on her latest illness or surgery. I often wonder why she can't make the connection between her obsession with food and her health problems.
A niece of mine posts all day long about absolutely nothing. She got married recently, and posted all day long while they were on their honeymoon. I was doing something all day (and all night) long on my honeymoon, but it wasn't posting on Facebook.