And who's deciding whether you "get to use lowercase"? I uploaded a module with an all lowercase name in the past, and noone stepped forward with a big "We don't allow you to do that, nanananana" sign. Perl, CPAN and PAUSE all handle it fine.

Abigail

Those are reserved for pragmata.

Not reserved. They're used for pragmata, but not reserved.

If you're not a P5P patch generating person, you don't get to use lowercase. {grin}

Anyone can have lc'ed module names. For pragma-ish modules, it's a good idea to use lowercase module names. load, forks and my own again are well chosen names, in my opinion.

Juerd # { site => 'juerd.nl', plp_site => 'plp.juerd.nl', do_not_use => 'spamtrap' }

Not reserved. They're used for pragmata, but not reserved.

perlmodlib.pod and perlstyle.pod:

"Perl informally reserves lowercase module names for 'pragma' modules like integer and strict."

perltoot.pod:

"You can look at other object-based, struct-like overrides of core functions in the 5.004 release of Perl in File::stat, Net::hostent, Net::netent, Net::protoent, Net::servent, Time::gmtime, Time::localtime, User::grent, and User::pwent. These modules have a final component that's all lowercase, by convention reserved for compiler pragmas, because they affect the compilation and change a builtin function."

"Reserved by convention" is arguably a contradiction, but it looks like lower case names are OK as long as you use a namespace that starts with upper case - say for example DBIx:: :-)