[quote=“X3M”]That would be me.
English is my second language, and I am barely average compared to my fellow countrymen.
Sometimes it takes too long time to check the correct spelling or usage of certain words, and then I have the option of not posting, or just guess the spelling/correct usage.
I have been expecting sniggering to some of my posts because of this, but you guys seem very considerate and understanding in this matter.
However, I would appreciate a PM if you see that a post lose its meaning or incites ridicule due to poor English skills.
Thanks in advance.[/quote]
X3M, I’m wondering how long you took to write the above post. Because, I see very few, if any (though, I make mistakes and miss stuff myself), problems with your post. You say you are “barely average compared to [your] fellow countrymen.” However, I work in an office full of your “fellow countrymen” and I’d say, from this post, your written English is above average. Even my bf makes more mistakes than you did in this single post. 
Why is it the Taiwanese with the best English always apologize the most for it being bad.

By the way, I think the suggestion of sending someone a PM, instead of pointing it out in a forum, is best. Unless, of course, you want to start a “English Errors” thread that can, possibly, be sticky and stay in the Teaching English forum. If you do that, however, I’d ask that you don’t directly quote someone, but come up with your own examples of correct/incorrect usage. That way it can’t be traced back to anyone and embarrass them.
Over all, though, unless the mistake is major and/or takes away from the meaning of the posts, I’d say just leave it.