While I agree on both sides of the argument, and while I feel like some maps are spoiled with secrets but there should be some to keep the map more interesting (not that a lot of them need it) and skill-testing, I feel that if they were taken out completely, then the player-base would be split in two and cast into a grand argument. From my experience, (Mind you I haven't been on in a while, so it's just a lack of witnessing) this is the first time I've seen someone comment about secrets at all. While limiting them would be a good idea, and taking them out another, I feel that there should be a compromise. Mevgin and Sploorky have the right idea, but I have a little change to that idea:
In maps that are above 128x128x128, users are not allowed to put any secrets in. However, for maps below 128x128x128, users may put in only ONE secret. It must be cleverly disguised (as some were saying) but must also be able to be found by the semi-skilled eye, I.e; Not under a grass block in a field of grass (as was said previously as well).
In fact, I feel like there should be a little test for the general populace of Zombieland. There should be 2 maps made, a 256x256x256 with no secrets, and a 64x64x64 with one secret. Both those maps are queued up one after another, and then after both are played a vote would be cast to keep or discard the new rule.
What do you say?