Is Leapfish the next big thing? That has yet to be determined, but from my initial browsing it has a great chance of becoming my next internet portal along the lines of my yahoo or iGoogle. I love how it has embraced and integrated Social right from the beginning. In addition, it includes a nice Online Search that integrates the three major search engines, social media search, and picture sharing websites.
Thanks to @nikolhillman for the heads up on Leapfish!