Architecture: Photo Site with Voting and Comments

This project will be a recommendation of what software combination to use for www.unfortunatelookingpeople.com. ? In addition to basic functionality of registration and pages for ? about us and privacy we are looking for people to be able to add a photograph with a text description and then vistors can comment and vote. Your bid will not be to develop the site, only recommend what software to use (Joomla, Wordpress, plugins etc) and why you would choose that. The product of your work will become the requirements document.