The Google person's response to the answer in question 5 would have pretty much ended the call with "can I talk to an actual engineer as you are doing poor keyword searches on my answers". I do admit to hearing the "I will stab you" voice in my head on that one[1]. This reflects really badly on Google.
Plus the answer on question 8 is the best worded answer to using big-O improperly I have seen.
1) http://www.urbandictionary.com/define.php?term=I%20will%20st...