This forum has a lot of mixed messages about contacting POI's. In my experience this helped me get into graduate programs. I emailed several professors, introduced myself, said I was interested in their work and why and explained my own work to them, asked them if they would like to talk further about research and the graduate program at their university. Most of the time I got a response. Some reponses were short and essentially said "I would love to work with you if you get accepted but we have no say" but others wanted to talk to me on the phone and meet me in person. Those who I made great connections not only remembered me and were looking out for my application but actually gave me tips on what the ad com was looking for (and how to adjust my personal statement accordingly). I am very much for contacting faculty you want to work with unless it says on the program website not to.