while much attention has been paid to Luthor and Brainiac (rightly so) the other super foes have been neglected. Two notable examples: Bizarro and Titano the super ape. Certainly their origin stories at least could be included. I suppose they don't quite fit in with the "through the ages" theme, being products of 50s-60s cheesy sci-fi. They don't adapt as well as say Luthor (I love Smallville) to the zeitgeist, but they were quite prominant in their day.
Of course they do fit in, This site is all about the Old School Superman, and they are part of that. The Great Rao is the one who picks teh comics to put on-line, so it's up to him.
In the meantime make sure to pick up: