Katarzyna Szymielewicz offers a good approach to how you think about your online profile: What you share, what your behavior tells them, and what the machine thinks of you.
Many decisions that affect your life are now dictated by the interpretation of your data profile rather than personal interactions. And it’s not just about advertising banners influencing the brand of the soap you buy—the same mechanics of profiling users and targeting messages apply to political campaigns and visa applications as much as supermarket metrics. When advertising looks like news and news look like entertainment, all types of content are profiled on the basis of your data.
This is a great article, and the most important layer to think about is the data you put online.
Check It Out: Your Online Profile Consists of Three Layers