As others have mentioned, look at their work and find someone that you really like their photos. I found when I was looking that some photograhers only have one or two photos from each wedding up on their site, well I'd ask to see a full wedding if I were you, only because you don't know if you will like the rest of the shots from those weddings. When I found my wedding photographer, I just knew right away and fell in love with his work, yet he was $$ but for something as important as this was to us, it was worth every penny.