It's vs. its and who's vs. whose.
I just read -- or tried to read -- an article entitled "Tourist Destinations That Are More Dangerous Than You Think." The grammatical errors in this article, and other articles by this same writer, are unbelievable. Are these supposed to be professional writers? Please hire some editors or proofreaders who know the difference between "it's, its" and "who's and whose."
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DENISE THERIOT
    
 commented
    
  their vs there vs they're