I don't think CPAN Guides will help people who need it. Someone unfamiliar with CPAN or the myriad Perl forums won't know the name of the module or author to look up. They probably won't know about the many resources already available, and I expect they won't know about yet another resource. If they can't use CPAN effectively already, I don't expect them to find a CPAN Guide module on CPAN.

I've seen a lot of these proposals over the years and they follow a certain trajectory usually: a lot of people get excited about the infrastructure, spend a little time working on a database, and then end up moving on. Any time you start thinking about the distribution mechanism first, you're likely to not get anywhere.

There are already a lot of places that people can get information about modules, types of modules, and so on. The trick is to produce more content and make it available through a canonical source, such as CPAN Search which already links in a lot of information about modules.

I'd certainly be happy to publish new content in The Perl Review. :)