I myself hate Facebook and am not a member myself. My two seventh-grade daughters are, though -- my husband got them accounts over my strenuous objections.
Facebook seems to be a truly excellent vehicle for keeping in touch with family, but I think email can serve that purpose just as well in terms of sending photo and video attachments if one wishes.
I object to it on many levels, including the way old flames can contact you and that fact that I don't think children, including my own, belong on it. My shrink told me that the forthcoming
DSM-V will have a diagnostic code for Facebook depression.
So I guess you can count me as one of the Facebook detractors!