Apple, Google and Facebook have all been caught paying contractors to transcribe recorded clips. Perhaps unsurprisingly, Microsoft is another company that has been doing the same. The company pays contractors to transcribe Skype translations and Cortana commands to improve the quality of both.
There is one important difference that sets Microsoft apart from the other three companies, though. While Apple, Google and Facebook have pledged to pause get contractors to transcribe recordings, it looks like Microsoft will still continue with the exercise.
It looks like Microsoft is making a stand regarding its recording of clips to improve Cortana and Skype Translate. It remains to be seen if Apple, Google and Facebook will be making an about turn with their earlier decision, now that Microsoft has set a precedent.