Its a cheap gimmick for uncreative minds. Think of it like zombies, it will be hot for a few years then it will drop off for a while. I've been to McKayme Manor and trust me, only a home haunt would get away with this stuff. People do these blackout things because they have no throughput, no props, and they are hurting the reputation for all haunts in the process. If these type of "haunts" grow, we all will have some serious problems. Mark my words on that.