I shared my findings to the community and within days it was all over the web and on every BBS, people where pretending they were the ones who made the hack, it was everywhere. Within weeks StufIt released a free update to fix this and I felt quite powerful at the effect I had caused. Years later I realized that my crack was banal and probably common knowledge to anyone but an ignorant teenager, most were just smart enough to not share it and ruin a good thing. So I inadvertently made the digital world a safer place.
Edit: thinking on it more, I doubt I was even the first person to share this information, I was just the first person stupid enough to share it on an easy to find warez/cracking site that everyone had access too. I also seem to recall that Stuffit explicitly said that this password protection was not a safe or reliable way to protect your data, if you wanted that you had to upgrade to the paid version. I probably had no real effect on anything and the new password protection StuffIt rolled out was probably already in the works when I showed up.