The thread on "HN Ignore Downvotes CSS" reminded me that often the initial reaction may be negative, but over time if the comment is good it will go net positive. Sit back and enjoy the ride--or at least I wouldn't jump to conclusions based on one (or maybe two?) initial votes in the first couple of minutes. And keep in mind that the HN population is big enough that there will be noise, and more so as the topics become more contentious.