How can a visitor tell if it's a real person or a fake person? You just need to find some better stock photos. ("Better" in this context means worse: dimmer lighting, less attractive models, scruffier surroundings and so on.)
I'm surprised at how many people detour to the g### profile. Not just people snooping from WebmasterWorld; real people.* It's a tiny little link at the very bottom of the page with text that says "If you must know..." but it seems to be enough.
* High-school choir director: "We don't just want to put on concerts for our parents. We want to sing for people."