I agree with Corey! It did get some getting used to... It reminded me of the movie Chronicle (similar filming method, young adults doing something... "unrealistic(?)", etc) It had a good flow, especially (no spoilers here!) with the complications that came at the climax of the film, and kept me on the edge of my seat. Very well executed, in my own opinion.
I thought it was mean spirited and extremely unfunny. Everything in the movie is what I hate most about my generation.