Prersonally I Use FB once a month
In my country I dont know peoples who use twitter LOL we have many of other microblogging services
G+ its still not underestimated, but google worinkg about it
Another "facebook like services" popular in my country:
naszaklasa.pl
fotka.pl
grono.pl(dead)
myspace.pl(almost dead)
Basically FB have 1" place from all of them , yet.
And many in other with simillar possibility in other countrys.
I heard "in 2006 we all wake up in 0.2 world"