It's not just that FaceTime "calls home" - it also has an apparent hole through which (at least in my case) a fairly nasty application has crawled. While actively polling my machine and then reporting back to whomever (which I was monitoring with Little Snitch) FaceTime (as apsd-ft) as permission to download a file from an ftp server ending with "apple.com" which I granted.
The nasty files loaded without identification, and it bothered me that there was no i.d. with the app or upgrade (whatever it was), so I truncated it just as it was completing. The loaded apps and routines kicked off my backup disk (making it unbootable), told TimeMachine that my boot drive was not to be booted, changed permissions throughout my libraries to writeable/erasable and locked others into no-write status, blocked inquiries, blocked the permission-changing process... and finally, made most processes in the MacBook (which although new to me, had migrated in about 300+ of my apps) dependent upon a polling to *it". I could not block it nor could I remove it... nor have I subsequently been able to do so.
