Korean learn english skill in school. But just for TOEIC and getting the job.
For enjoying the keyboarding, almost geekhacker`s english is not hard to me, but someone`s one still make me google or dictionary.
Also abbreviation word and their own code`s one make me headache. ex) CC`s long term code.
For foreign language speakers, some word need easier.
But in korean forum, nobody request correct korean(hangul) to foreigner. They write english, we reply by EASY english.
Someone(korean) want to join Geekhack GB, they give up cuz hard english to understanding in thread.(+ long-trem waiting,paypal and strange gb system)