IronArcturus: I still argue that, nowadays, a "roguelike" does not necessarily mean that the game is related to the original "Rogue."
Yeah, these things change over time, for better or worse. From what I've heard, "Metroidvania" used to refer to Castlevania games that were similar to the Metroid series. Now, people use the term to refer to any game that is "Metroid-like", even though with the original meaning it should only refer to certain Castlevania games. Similarly, "roguelike" now usually refers to any game with procedural/random elements and permadeath, regardless of its actual genre.