Our detectives are back with the following intel on this WordPress site
The site is using the Poloray theme by InkThemes.com .
We could identify 3 plugins (there might be more) - bbPress , BuddyPress and Jetpack by WordPress.com
The Poloray Theme for WordPress is simple and beautiful with lots of customization options that can tweaked by Theme Options Panel like logos, intro texts and background. Poloray Theme supports five widgetized areas (two in the sidebar, three 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 "Fullwidth" and "Gallery" categories, and has an optional one-column page template that removes the sidebar.