Overseas Property Centres
Overseas Property Centres is a property listing site. Developers list their developments and stand-alone properties on the site, which in turn lists them on various other sites.
Content is updated by administrators and sales people in the company with varying levels of computer literacy, which means that the cms needed to be very forgiving. This Drupal site was the beginning of one of Syntarsus' major SEO software products: navtax. This site contains over 5000 properties and is extremely active, which means it needs to sit on very stable and reliable software.