Saucony ran a socialy driven campaign entitled "Find Your Strong". The site featured a weekly contest where users submitted photos, quotes and videos for a chance to win Saucony products. The site featured a infinite scrollable masonary style grid for displaying the user's submissions. The site also implements the Facebook likes widget and a custom script for sorting by likes as well as the Facebook comments widgets.
I built this with HTML5, CSS, jQuery, AJAX, and Isotope on the front end and php/mysql with the CodeIgniter framework on the backend.