There are plenty of big markets where Mark Zuckerberg's creation isn't dominant. In Japan, Facebook doesn't rank in the top three, and the site isn't much of a force in Brazil or China, two populous countries where Internet usage is off the charts.
The outlook for Facebook in Russia may be more promising, despite the popularity of homegrown social network sites. Facebook officially launched its site in April and only ranks No. 5 so far, according to Internet tracker comScore, but its growth has been impressive.
Read more at Business Week.
