I can't tell you how long I wanted to see Unfriended. I was hooked on the concept alone the first time I saw a trailer. Then I got so bogged down with work that it was in and out of theater before I got a chance to see it.
Long story short, I own the Blu-Ray now after renting it on Vudu. Easily the best horror of the year so far and only Crimson Peak seems poised to challenge it.
My full review is at Man, I Love Films.