Earlier quoted context omitted.
It's pretty clear this is a troll account (ie, one that exists to post controversial statements in order to cause grief). Here are some examples: http://news.ycombinator.com/item?id=1782355 http://news.ycombinator.com/item?id=1935416 http://news.ycombinator.com/item?id=1994504 http://news.ycombinator.com/item?id=2041013 http://news.ycombinator.com/item?id=2027532 http://news.ycombinator.com/item?id=2018434 http://new…
those posts are my honest replies. I don't invoke name calling and try to backup everything with sources. I do get downvoted a lot here, I do not have multiple accounts or use my account "as a troll account." My postings are sincere and I honestly have a dissenting viewpoint in general both online and offline. My friends often remark that I like debates. If you disagree with me, let me know. My philosophy in debating…
For example, it's pretty clear that you are anti-vaccine. It's fine to hold that opinion, but as I'm sure you've seen the overwhelming evidence against your point of view I don't see any need in re-hashing the arguments.
In cases like this you may not be consciously trolling, but in my view arguing a dissenting view in the face of such overwhelming evidence exhibits the same damaging behavior patterns that a troll engages in. Given that, I think the appropriate response is exactly the same as the response to a troll, ie: a perfunctory link to counter evidence on Wikipedia (for the sake of casual readers), and a downvote.