Well, this site or any other that has a good solid peer review process. I'd mention SourceForge, but unless someone knows about a project there and takes an active interest in it, nobody's going to see it, whereas here, each post is considered a learning exercise, so you have a ton of people who are willing to look at it, some to teach, others to learn themselves.

I'm afraid I don't know of many other sites like that, and to be honest, when in doubt, I ask for the advice of some of the people here, and am never sorry.

But yeah, if you're using something to put out onto a production server, and you're not familiar enough with Perl to be able to audit it not only for suitability to your task, but for security and efficiency, you probably want to run it by somebody that is that familiar with Perl. Generally most everything you see on CPAN and PM especially has already been through that process.