As I am usually using Module::Build I did not know that a recent version of MakeMaker has started to support the LICENSE parameter and will include it in the automatically created META.yml. That in turn will increase your kwalitee metric....
In addition it is also very useful as it show up on the results page of search.cpan.org and is easily machine readable. You only need to add LICENSE => 'perl', to Makefile.PL as it can be seen here: http://search.cpan.org/src/PETDANCE/ack-1.78/Makefile.PL Gabor
