Shellen left Google in August 2007 and created The Secret Agency, a product development company that is incubating ideas in the social media space. Shellen joined Google in February 2003 as part of Google's acquisition of Pyra Labs, creators of Blogger. After spending the last few years as the founding product manager for Google Reader he moved to the Google New Business Development team to drive partnerships and explore emerging markets. Shellen began working with Pyra Labs in late 2000 to manage its business and product strategy.