>>>>>PS "in all the years I've been present here" I'm sure you appreciate the English lesson :-)
>>>>
>>>>Are these the type of mistakes that only non-native writers make?
>>>
>>>Mostly :) But non-native speakers rarely confuse it's and its as native often do :)
>>
>>That's true!
>>
>>Now how about "Ones"? Is it
>>
>>"I think it's ones duty to help those less fortunate..." or
>>
>>"I think it's one's duty to help those less fortunate..."?
>
>I would vote for the second, but my English language knowledge is limited.

Yes

BTW what's wrong with this sentence.

"Did you lost the details on the form?" ?