Those are zelda "hacks" NOT "homebrews".  There is a big difference.

The articles I've been writing in the eZine are about "hacks", which involve a rom hacker altering the rom image of the original game and turning it into something new.  Many times the end result looks professionally done, and quite a few are truly fantastic games.  The better hacks take years to develop, but still required the core programming of the original game.

A "homebrew" starts from the ground up and is written in ASM.  To date, nobody has written an NES homebrew anywhere near as involved as Zelda or Megaman, though there are a few promising titles in the works.

Also, in general, hacks are based of an existing IP, and are infringing on copyright by using the original game code, anyway.  Homebrews SHOULD all be original properties and are the legitimate copyright of their author.  That is why I said you should not steal actual homebrew releases, since you're only hurting the small community of authors by doing so.  Hacks, on the other hand, are free to the masses, as long as you're comfortable pirating the original game.