The problem with this experiment is that you assume many people would click on the link even it it was malicious. Hacker News is essentially peer reviewed, and

The problem with this experiment is that you assume many people would click on the link even it it was malicious. Hacker News is essentially peer reviewed, and I would imagine bad links would have been flagged quickly, preventing many users from going there. Even if your experiment leads to a large number of visitors to your site, I wouldn't assume this to be the case if your site actually had malicious content.