I suspect the same people who struggle to understand how their online actions add up to a portrait of them also have little or no sense of it being the case in the real world.

In a world of people looking to exploit or beat others, a lack of caution with personal data (including feelings, statuses, pictures, casual comments) can have serious consequences. In my view, social media, is a ripe for exploitation – whether it’s by a vengeful spouse or an online scammer.