This makes me wonder; how is it appropriate to handle vulnerabilities such as these?
A few months ago, I decided (as an experiment to see how common XSS actually is) to click on random HN links and type "<asdf '\"" into any search bars and look for weird rendering on the page or weird behaviour in the page source. After half an hour, I had five or so exploitable XSS vulnerabilities, two of the more prominent ones being CNN and Newegg. I sent emails to their security-related issue addresses, but they never responded or fixed the issue.
After sending them a couple more emails, I just gave up. But this article makes me wonder, could I have handled the situation better? The thought of releasing a benign-but-scary exploit crossed my mind, b ut I'm uncertain...