Shortly after the release of Mega Man 9, as fans were discovering loads of great secrets, I made an innocent little post, mentioning an as-yet-undiscovered nugget in the game.

The Mega Man-loving internets were not pleased that a secret might have escaped their all-seeing eyes, and rolled up their collective sleeves to unearth the nugget.  I've been completely blown away by their response, which has generated a virtual encyclopedia of amazing little Mega Man tricks and trivia (the video above is just one small part of the total).

Though they haven't discovered the it yet, I did want to say that everyone at Capcom is impressed by the research, and offer this: Based on what I've seen so far, I'd say you're about halfway towards discovering the secret. 

Most Mega Man fans want to strangle me for not spilling the beans, but I <3 mysteries and they're getting pretty rare in the internet age.  I didn't intend to torture anyone when I mentioned it so long ago, and I'd advise you to just let it go if it's driving you nuts, but to those still searching, I promise that:

-the secret is not a snipe hunt, macguffin, or otherwise faked.

-I will tell you when it is discovered. 

-AFAIK (and I keep tabs), it has not yet been discovered.