Here's a quote/analogy I've been using for a while to overarchingly describe a strategy for engaging on social media that I've found helpful and descriptive.

If you walk into a bar and all you do is stand on the bar, screaming and shouting about yourself, would you expect anyone to engage with you? It's the same with social media…

In follow up to that and the issue of privacy, here's another analogy.

If you then started telling everyone where your keys were, your movements for the day, where your valuables were, your fears and weaknesses and a bunch of other personal details. You would expect some repercussions.