Is easy to know when a non english speaker is writting?

Well, in my experience, English is not quite the - common- language shared by many other than American English speakers.

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Same here, actually Spanish is more common. My German, Russian speaking skills are pretty limited, but most East EU and West EU folks speak Spanish, French and English. Spanish will bridge the gap, where English won’t sometimes. My Asian, and Island speaking skills are about the same as my German, but French and Spanish will get you a good meal a place to sleep, and hopefully, a good time.

Funny my grandmother, still spoke a dialect of Irish Gaelic. English wasn’t her first learned language, but she preferred to speak and write in english.

c’est la vie, amego!!!

Regards

I enjoy reading posts, in any forum, from people of other cultures or nationalities. I can often spot syntax and grammer oddities, but it makes for even more interesting reading. 

I used to teach English as a second language. English is far more easily spoken than written. 

What gets to me are obvious grammer errors and written illiteracy of native English speakers. I see very little of this on Audiogon, but when reading political posts it becomes obvious that "Coastal Elites" do tend to be more literate, regardless of political preference.

This is very important(NOT).

And what's the point of this post?  is there a concern that if identified as a non-english speaker (as a 1st language) that you will somehow be treated differently in this forum?  That would most certainly be a misplaced concern!

Hi chetan88,
Respectfully; yes, it is normally very easy to tell when the poster's first language is not English. Your own post here contains two misspellings. As someone else here said, it's actually kind of charming, just as when someone you meet speaks with an accent and somewhat imperfect pronunciation or word choices.
However...as motown-l said, it' is really surprising to see the gross errors in spelling and grammar that are made by posters here who are obviously American. These posters often have extensive knowledge of electronics and other subjects requiring good or better intelligence; yet they don't know the difference between there and their. They also write run-on sentences without regard to punctuation; or they use commas too often in the wrong places. We all make spelling errors and occasional grammatical or punctuation errors. I'm speaking about consistent misuse by presumably educated people who own systems that are worth quite a bit more than my home.
In the past when I have pointed this out occasionally,  I have been called the grammar police, etc; and so have others that pointed these things out. I still think that there is value in writing things as correctly as possible, because it makes it much easier to read.