Are there Perl or CPAN site Greasemonkey scripts other than those listed under Perl or CPAN at UserScripts? I'd like to put together a website-modding Item for The Effective Perler.
They should be tagged with 'Perl' and/or 'CPAN', but just in case I forgot: there are my scripts at http://userscripts.org/users/38422/scripts.
On a similar note, there's the cpan-mangler: https://github.com/oalders/cpan-mangler
It's Plack::Middleware which we've incorporated some GreaseMonkey scripts into. Does the same job, but you're not restricted to browsers which support GM.
I'm the author of Mastering Perl, and the co-author of Learning Perl (6th Edition), Intermediate Perl, Programming Perl (4th Edition) and Effective Perl Programming (2nd Edition).