Let me ask you for some perspective.
I’ll be honest from the start, my book sales are barely that of a part-time job. I make more than a babysitter but less than someone who works 16 hours a week at minimum wage. Obviously, I know I’m not a best-seller. I do, however, have several acquaintances who take it upon themselves to try to use my Facebook wall as a springboard for their own fame (be it musician, political writer, or what have you). None of them are close friends (nor can they or their family read this). What is the reasonable action to take? Nothing? Unfriending? Blocking?