Help with resolving this is appreciated. My wife and I just got an iPhone 4 for each of us. Trying to figure out best way so contacts and calendars are synced and edit-able by both of us ... on our iMac, the phones AND at me.com. Currently I have a single MobileMe (MM) account, an email-only MM for my wife, and she's using a separate user acct on the iMac. On her iMac acct I entered my MM credentials to sync contacts and calendar. I connected the iPhone on her user acct. iMac accts and iPhones sync perfectly. Only problem is her me.com login does not sync with our contacts, and the calendar is not available (probably the least important piece). Maybe her me.com access with contacts/calendar is less critical since she'll have the iPhone??? From what I've read, the contacts won't sync across users/people, regardless of having (a) multiple MM single accts, or (b) a family MM. I'm open to sharing a single iMac user acct; upgrading to family MM; using the MM five users creatively; and other ideas. The most difficult task will be getting her off Hotmail -- not IMAP so it's not friendly with email client or iPhone, but at least I already merged her Hotmail contacts into Address Book. Thanks!