I stopped using Instagram because I couldn't keep up with me post-dating my activities. It was more of a chore to remember to post a week or so later and 'pretend' I'm doing such activity now, instead I just didn't bother sharing.
I got a brand new car a few months back, and even though I wanted to share a pic (not to gloat) I knew it would be easy to track down, and due to where I live it's easy to see whether I was home or not. Not a rare car by any means, but how many '14 plate cars in particular colour in a particular model do you see in any one area? Matching cars could be 5-10 miles apart easy
Does anyone else think like this?