Maybe this is covered "indirectly" by probing through the links you have so far, but personally, I think "The Perl Journal" (God rest its soul) deserves direct mention:

The Perl Journal (http://www.tpj.com/)

It's no longer an active publication (at least, not in physical paper magazine form), but it's still there in the online sense -- and it has a lot dynamite stuff. (The magazine covers alone were unparalleled for wit, depth, and entertainment value.)