I'd add the whole ACME:: namespace to the list of discouraged modules, too. Older PerlMonks will already know this, i newbie might not.

And i'd also put up a warning flag around most of the JSON:: modules. They work fine for most stuff, but can be VERY flaky when it comes to nested JSON structures in combination with Unicode/UTF8. (Why would you have nested JSON structures? Because you can, apparently)