He's done research into computer security and reverse engineering and has one patent. He had been a closet skeptic for years, but attending TAM 5 in 2007 motivated him to become involved. He created the website What's The Harm in 2008 to help draw attention to stories of real-world victims of pseudoscience and misinformation. It was an instant success and led to Tim giving a popular presentation on internet skeptical tools at TAM 6. He now has a blog called Skepical Software Tools where he writes about how skeptics can use the internet to be more effective.