I have all of my Macs and iPhones and iPads synced with MobileMe. Which means everything syncs with everything. It's very handy. But... I can't delete Contact or Address Book information that is obsolete. For example, suppose I have two email addresses for my pal Steve: work email: firstname.lastname@example.org work email: email@example.com I want to delete the first one but: If I delete it from Address Book on one of my Macs, it syncs back in from MobileMe or one of the other devices. If I delete it from my Contacts in MobileMe, it syncs back in from Address Book on one of my Macs or one of the other devices. If I delete it on an iPhone or iPad, it syncs back in from Mobile Me or Address Book. Ask an expert I asked the genius at an Apple Store and he said he didn't know but he would ask an even genius-ier employee. That employee said to delete it from MobileMe since that's the master copy. But that doesn't work. If I delete firstname.lastname@example.org from MobileMe (or Address book or an iPhone or iPad) I get work email: email@example.com but the next day it's back to work email: firstname.lastname@example.org work email: email@example.com How do you delete a property of a contact or Address Book entry when MobileMe and Address Book and a bunch of i-devices are synced?