We, as humans, aren&#x27;t well equipped to properly measure the impact of posting a lot of little things which, individually, don&#x27;t give a lot of information away (if any). &quot;Big Data&quot; projects and tools such as these allows agents to learn <i>more</i> about us than we have ever consciously given away.<p>For example, if you post only about being sick, then about your craving for pickles, would you expect an agent to be able to identify that you&#x27;re pregnant, and given your posting timeline, identify the due date with remarkable accuracy? Ad companies have been doing this with browsing behavior for awhile.<p>The only way to avoid this particular threat is to not participate at all, something you will have a ridiculously hard time convincing a teenager of.