For those looking to ramp up their social marketing in Asia, here are a couple of helpful links:

Chinese Social Media Landascape [infographgic] --  http://bit.ly/yPoETv

SocialBakers.com (Good data by country for different social media outlets)  http://www.socialbakers.com/

I'd like to keep updating this post with more information.  Bookmark it and hopefully we can create a reference of handy tools for social media marketing in Asia.