Sonico, think Facebook for Latin America - you may recall in a previous post, recently announced that they have passed the 15 million mark in registered users (content in Spanish) - keep in mind they have only been around for 9 months. In the beginning of 2008, the network had about 7.3 million registered users. These numbers are supported by a March 2008 ComScore report.
So it seems like they have surpassed Hi5, Orkut, and Facebook (LATAM registered users) and thus becoming reigning leaders in Latin America…
Mashable first reported on this and as a result were contacted by Hi5 to clarify - to which immediately a follow-up post was written. According to a more recent comScore report (April 2008) - Hi5 is clearly still the leader in overall traffic.
This does not take away from Sonico’s strong growth (or any other of the social networks in the region)…what I gather from all this is that Latin America is poised for a huge boom of online communities, conversations, opportunities, and yes, even challenges. And as internet penetration increases more and more, expect this phenomenon to out pace even Sonico’s growth.

