I'm a college student, and friends with my dad and several other family members on facebook. Yes, it's sometimes creepy, but that's what privacy settings are for. If you don't want your parents to see something, stick them in your limited profile section, and only let them see certain albums, etc. Solves the problem.

Well in case you get hit, best treatment ever has nothing to do with meds: The Salad Head treatment. Coat your hair in vinegar and oil, rinse, then brush through with a nit comb and wash with shampoo--doesn't matter if it's for lice or not. The vinegar drowns the adults, and the oil keeps the nits from sticking. Yay for good old-fashioned, pre-meds treatments.