(It's in Chinese.)
This forum has official relations with Blizzard in China, so it's a solid place.
When I applied for admin, I was thinking to contribute with my knowledge in lore, and we are expected to have a variety of players who are interested in lore, rpg, co-op, vs AI, ladder and eSport.
However right now the users are focused on co-op heavily, I am not against of them talking that, but my co-op understanding is only average, I want to provide my users with contents yet I can't write guides myself. My English and Chinese are both good enough, so I think about translating articles.
Where shall I look for co-op information? It seems that teamliquid doesn't have a co-op section, so I choose to post on a section which has a big co-op thread(common it says co-op, so it's obviously not single player).