Google war with Facebook over members

Facebook user could import contact from other email service like Gmail, yahoo,...

Google block facebook access to gmail contact list, as news spread over net, many facebook user try gmail contact list to invite new friend or advertise facebook group, but it seems that Google banned facebook api programs to reach gmail,

For young people, this may only have a minimal impact. Only 11% of kids use email to communication with their friends regularly anyway, begging the question how many young people have extensive contacts in their Gmail accounts that they care to import into Facebook? Older people, though, will often have lots of contacts in Gmail (or Hotmail or Yahoo! Mail). The hope from Google’s perspective, obviously, would be that these folks would simply stick with Gmail for their communications instead of moving to Facebook-centric communications like most of the under-25 set has. But will it really work that way? (Zdet)

 well, facebook is strong in providing communication tools for user in Comparison to gmail limited that only use in it's mail service or Buzz and maybe little in Google Reader, so if Google try to battle over Social network?