http://docs.info.apple.com/article.html?artnum=61766
While it is possible to pair two Macintosh computers over Bluetooth and share files, it is not possible to sync data between them using iSync.
To sync data between two computers using iSync, you must have a .Mac account. For more information about setting up iSync with .Mac, consult iSync Help, available from the Help menu.
Jaha, nu "tvingas" vi att betala för .Mac om vi vill vara med!