387617 Online auction site

I'm looking for a team to design and create a unique penny auction site. I'm not looking for a clone of existing sites like Swoopo, but a unique, custom built site designed to my specifications. You will need to show me examples of your work using PHP, MySQL, Ajax, and integration of social networking tools including real time chat boxes, instant messaging, twitter and social bookmarking integration, etc. You will be designing three unique interface: a buyer interface, a seller interface, and an admin. The site will need authorize .net, and paypal or google checkout integration. This will be a long term relationship for the right team.