Hello Designer :)
Our current web is http://www.morphologica.net (we are about to change names to Vida-Systems.com) but we are open to your creativity (i.e. doesn't have to look anything like it looks now, necessarily)
Our demographics in general are related to healthcare: doctors, technicians and business people related to health-care (we are a startup), normally fairly serious fellows, but I wouldn't rule out the playful factor, since Gamification is one of our most interesting twists.
Also in the future we plan to spread out to the general consumer, offering tools for patient-physician relationship, patient education tools, etc.
So: health, games, training, clarity, communication, are some of the elements that are involved. Check the site.
Thanks for your input!!!