Can you map the social effect of Malaysia's Chinese schools?

Matthew Hurst has mapped a data set of blog links and is now looking into a split cluster of about 6,000 blogs. (You can see the split in the map detail to the right.) The cluster is exclusively Malaysian, and mostly uses the blogspot platform (see note at close). Mr Hurst didn't have any immediate explanation for the split, though he writes that he is digging deeper into the data.

I wrote Daniel Chandranayagam, who edits CSR Digest, a Malaysian web magazine about corporate social responsibility. Mr Chandranayagam also contributes to Global Voices about Malaysia, which is how I found him. He was careful to point out that his were only educated guesses, but offered two possibilities.