Some Perl libraries (or frameworks if you wish) have their own web sites asides from Meta::CPAN that allow customization and more "personalization".
- Perl Dancer
- Pherkin a.k.a. Test::BDD::Cucumber
It is very easy to create a static web site free of charge on GitHub pages, but I could understand if people were reluctant to promote a URL that is based on a commercial service.
On the other hand they might not want to spend 10-20 USD/year on a domain name.