That's pretty unsettling. I wonder if I'm going to find myself in a similar situation regarding social networking as I found myself in regarding credit cards a number of years ago. For the longest time I didn't have any credit cards since the idea of debt really scared me but I realized I was only hurting myself by not building a credit history. I signed up for a number of cards over the years and put small recurring charges on them that I always pay off in full. Similarly, I don't really participate in much social media, HN is the exception, and I have no FB account, but I wonder if at some point my lack of public facing social media will negatively impact other areas of my life like borrowing, employment, or housing.
Maybe someone enterprising can start a service that automatically posts a bunch of innocuous stuff to a FB profile so I don't have to bother wasting my time with it.