This is a great place to discuss semantics, syntax, morphology and related areas. As a fairly proficient writer of the English language, I would love to see improvement in these skills.
Instead of insulting other posters, whose primary language may or may not be English, why don’t we all bring mistakes we notice to this thread, so that posters can benefit from the discussion without feeling attacked, and threads can stay on topic without being hijacked in the name of “education”? Of course, those who are not irritated by errors need not post here at all.
I think this alternative may make everyone happier.