'Are you sponsored by Google?' I think so. I've been accused of being an 'anti-google astroturfer' before. 'Gosh that's odd', I thought. Then I read the posts written by my accuser. Pro-google, down the line - echoing PR talking points. Normal people don't do this. I do think Google hires PR flacks to post here on HN.
Seems more likely he is just a regular Google employee who supports what they are doing, albeit a bit aggressively. There are many of them on HN. Not sure why either of you are assuming malice here.