Jill (left, 2nd from bottom) was growing quite alarmed; after twittering and posting on her FaceBook account that she thought Justin Bieber was a stupid little twit for getting two tattoos and then bragging about it, she suddenly started getting E-mails saying “Fool, Justin is cool,” and from complete strangers, notices saying she had been pre-unfriended. . . . . David, Sf.G.