Guillaume Paumier is a French physicist, photographer and Wikimedian living in San Francisco, California. He holds a master’s degree in nanotechnology and a Ph.D in microsystems for life sciences; he is also the main author of a Wikipedia handbook. A long-time Wikipedian, he is currently working as Product Manager for the Wikimedia Foundation, the non-profit that runs Wikipedia. A free software enthusiast, he is particularly interested in collaboration opportunities between the free knowledge and free software communities. His other interests include scientific communication, information design, desktop publishing and Motown music.