>down votes
It's because of what you said about ASP.NET. I have not been coming to HN that long, but from what I have seen, just about any comment that criticizes Apple, popular windows software, or praises open source alternatives to closed source immediately are met with a barrage of down votes.
edit: and just to clarify, it's not uncommon to see posts on the front page that appear to praise an open source alternative, but anytime you read the comments, the first one is almost always someone who claims that the open source version still isn't ready because it doesn't have that one feature that everybody needs. I know I'm going to sound like a kook, but I would not be surprised in the least if at least 15% of the active HN user base are "shill" accounts controlled by teams that are controlled by different entities. Would HN be a target for operations like this? I think so. There are quite a few high-profile people who regularly come here, and manipulating the opinions of those people are probably in the interests of many organizations. Making sure switching to open source software that isn't distributed by MS or Apple isn't a bold move but a dumb move is in the interest both corporations.