I've used it plenty of times, but you cant do the shit alone, you always gotta have one or more people wit you.
The last time I did that shit was a few years sgo on Halloween. Me and a couple other folx went to this cemetery at night with some candles and shit, it didnt work out there, too open I guess. But when we came back to the crib, hit all the lights, lit up some candles and shit, it worked. It was crazy 'cause I didnt think the damn thang would work and somebody was always complaining about somebody else movin it. But we stopped pressin on the damn thing and just had our fingertips on it, and wit 4 ppl playin all wit fingertips on that shit and it still movin. It kinda caught on and we asked hella crazy ass questions to it. Its crazy but if you do the shit right, it'll surprise you.
As for a curse comin wit it? I dont know about that shit, I mean we did it wrong/right in the same night and I aint got so Stephen King Thinner curse on me, lol.
But before that I played it at least 10 times, I never believed that shit would work, but it did.
One time we even got high and bold tried to conjure up the spirit of this girl who committed suicide on my homies college campus. We aint see no damn ghost but found out some shit on why she did it.