Whoa. Seriously? Is South Korea known for heavy online censorship?
Seriously, yes. South Korea censors the North Korean websites and some illegal ones (heavy porn, for example) too. I think there are no known such instances against the free speech rather than NK-related ones, but I'm afraid that there might be in the future.
> heavy porn
porn + tf2?
This is the redirect for sites that South Korea bans. Also applies to gambling websites, certain porn, North Korea related things, etc.
I like how they call their country "Korea".
What else would they call it? (use DPRK everywhere?) They don't recognize the "other" Korea. South Korea does the same, e.g. at http://www.mofat.go.kr/