One thing I realize every time one of my tweets gets retweeted a bunch is that the people I know are fine, and the people who know the people I know are fine, but the people THOSE people know? They are just out of their gourds.
I wish you could lock your account to within X degrees of separation. - Fully private inhibits discovery. - An open account facilitates anti-social behavior / noise. - Friends-of-friends only: Goldilocks zone. (The computational expense is prob prohibitive though.)