And? Have they ever sent an email to someone not on the service lying and saying, "so and so is trying to connect with you on <Apple Service>"? Have they ever harvested your contacts and then spammed them with ads for your service? Because Facebook, LinkedIn, etc. have. Backing your Contacts up to iCloud so they're on all your devices isn't remotely the same as apps like Facebook and LinkedIn slurping up your contacts for their own use and it's extremely disingenuous of you to imply it's the same thing.