Depends on the tone that you want to set. For a blog etc I think conversationalist tone is fine. Even fast design docs can benefit from a conversationalist ton

Depends on the tone that you want to set. For a blog etc I think conversationalist tone is fine. Even fast design docs can benefit from a conversationalist tone. Trying to write a big technical design doc w/ that tone wouldn't fit though IMO so you have to evaluate case by case.