Can't say for certain - but generally, was about people on holiday. I heard the insurance thing from someone I know in the industry, so only have his word on this - I might be wrong.
My Facebook feed has been blighted with this, a stream of photos each day from my friend's holiday. Not sure he realises that if his house gets burgled, insurance companies check Facebook and won't pay out if they see he's broadcasting the fact the house is empty.
I'm 40's, have an iphone, like apps etc, but Instagram/Snapchat just go way over my head. I can't see the appeal of them. Definitely steps too far into social media for me.
I have never had Netflix - instead, I like to watch old comedies on YouTube - Dear John, The Peter Principle, Laurel &...