It was scary, but i wouldn't rate this very highly since there are many things in there that could've been explained better and explore more of.
SPOILERS - what is the whole 'earn your face' thing with the murderers? why did they want to murder people? we see the clown setting up a trap at the beginning of the movie, and at the end we see Sam getting trapped in it, but was that the whole point of the trap? Just to catch Sam? Suppose if Sam didn't come, what would be the use of the trap?
Many problems with the plot, but good scares.