I'm pretty sure those hacks just popped up in people's heads after reading yours. Most of the n00bs around here tend to post immediately after they've had a "brilliant" idea, which, most of the time, they had thought up of within the previous three and a half minutes. At least we still have a few people who actually think through things before they post.
Also, I think EV meant back when Rocket's Revenge was at it's all-time high, like when it got all of those awards and stuff. That's when all of those Rocket hacks came up. It faded away for a while, then the idea became "golden" again when you brought up your thread.