Our detectives are back with the following intel on this WordPress site
The site is using the Twenty Ten theme by the WordPress team .
We could identify 4 plugins (there might be more) - category-page-icons , donation-goals-paypal-ipn-nonprofitcms-free , s2Member Framework (Member Roles, Capabilities, Membership, PayPal Members) and WordPress Simple PayPal Shopping Cart
The 2010 theme for WordPress is stylish, customizable, simple, and readable -- make it yours with a custom menu, header image, and background. Twenty Ten supports six widgetized areas (two in the sidebar, four in the footer) and featured images (thumbnails for gallery posts and custom header images for posts and pages). It includes stylesheets for print and the admin Visual Editor, special styles for posts in the "Asides" and "Gallery" categories, and has an optional one-column page template that removes the sidebar.
s2Member®—a powerful (free) membership plugin for WordPress®. Protect members only content with roles/capabilities.