You make some good points, but I think the rule of thumb the article brings up still holds true: "choose translators located in the region you are marketing your product in." Yes, Traditional to Simplified mapping can be done easily by computer(the article actually provides a link to a site that does this for free), and yes, despite regional vocabulary differences for words like taxi, all words can be written in Traditional or Simplified and be largely understood by all of those in Hong Kong, Taiwan, and Mainland. The article could have done a better job explaining this, and sometimes simply understanding is good enough.
That said, the article really has non Chinese speakers marketing their product in China in mind, and just as if I were marketing my product in the U.K. I would want British spellings, I would want local words to be used if I were marketing my product to a specific Chinese locale. And, in my opinion, the difference in vocabularies between HK/TW/CN are arguably greater than the English vocabulary differences between UK and the US. Simply put, if I were marketing my product to Hong Kong, I would not want to pay even $.05/word for a translation of a product description if I knew it was done by a Mandarin speaker from Beijing who was not versed in the regional differences, and had only converted the text from Simplified to Traditional. I think this holds true for both small boutique hotels, and "high volume group-buying websites."
That said, the article really has non Chinese speakers marketing their product in China in mind, and just as if I were marketing my product in the U.K. I would want British spellings, I would want local words to be used if I were marketing my product to a specific Chinese locale. And, in my opinion, the difference in vocabularies between HK/TW/CN are arguably greater than the English vocabulary differences between UK and the US. Simply put, if I were marketing my product to Hong Kong, I would not want to pay even $.05/word for a translation of a product description if I knew it was done by a Mandarin speaker from Beijing who was not versed in the regional differences, and had only converted the text from Simplified to Traditional. I think this holds true for both small boutique hotels, and "high volume group-buying websites."