Hold on, this can be tricky if you use Google’s Jabber service (aka Google Talk) and don’t want to corrupt your Google Talk buddy list and complete address book in one single step.
Apparently, both lists are linked very closely in Google, so the first sync can be disappointing (and more than just that).
If you aren’t an address book freak, you are already on the safe side (not my case).
Via Håvard Sørbø.
Update: Mac OS X Hints has published a hint on this theme.
