search.cpan.org is a sites that provide a nice, searchable interface listing CPAN distributions and showing their documentation. Although it is a popular gateway to the CPAN, it is not the only one.

If you're using Google, it's pretty much the only one that you'll hit. And, if you aren't familiar with Perl and don't know about the alternatives, then it will be the documentation you hit. I don't think I've ever seen metacpan in a Google search result for a module.

With the amount of personalisation done, it's hard to compare Google searches. The results I get are not likely to be the same as the ones you get. But searching for "kavorka perl" I get the following:

1. http://blogs.perl.org/users/toby_inkster/2013/11/introducing-kavorka.html
2. http://search.cpan.org/perldoc?Kavorka
3. https://metacpan.org/release/Kavorka
4. https://github.com/tobyink/p5-kavorka
5. https://github.com/lukec/stripe-perl/issues/28 (hmmm... looks interesting... I think I'll reply to this issue)

So metacpan is certainly in there, even if it's not (yet) rating as highly as search.cpan.org. If the latter is constantly down when Googlebot visits though, expect this to change over time!

toby döt ink