A negative vote is not the end of the world. And I agree with the others that posts explaining what is wrong with the post that was voted down would simply be more clutter.
If you have a post with a negavite point or two, or even a few of those, that does not mean anything personal against you. Take it in context of what other posts you have done. Typically, if you have posted something materially incorrect, not factual, or not in best use, you will be gently corrected by one of the many folks here that know perl better than I know english *smile*
But I would lose no sleep over a post with a couple negative votes. The time to worry would be when most of your posts are dipping down there.
Roy Alan
"I quit; I concede. Tanj on your silly game!" -- Louis Wu