To give an example of why someone might not want to spill the beans... My brother and I contacted this old guy who ran a rental store long ago, and got him to agree to meet us at his store where we bought some really cool complete games from his stash, including the legendary Hagane. Well, we told this guy who runs a local game store in the area (stupid of us). The other day, this guy who already has thousands of games in his store and overcharges for most of them, informed me that he went to the old dude and bought out the rest of everything he had to resell.
I just hate to see stuff like that happen, and especially knowing that it's because of me.