Pursuing sale or development of domain names within portfolio including premium, category defining, keyword rich, brandable and pure play (generic) domain names. Categories which include the largest domain name portfolios are: Phase Change Energy and Phase Change Materials, Meaningful Use - Healthcare / Electronic Health Records and Multifamily Commercial Real Estate. Other categories include: Legal, Home & Garden, Interior Design & Decorating and more. John Callahan's career focus has been early stage technology and media companies. His experience includes leadership and business development positions in Seattle, Silicon Valley, Boulder, San Francisco, Washington D.C., New York City, Chicago and St. Louis. John's early business experience included: voice processing in the ’80s and Internet infrastructure in the ’90s. He was the founder of a Multifamily focused broadband infrastructure company in the late 90's. Since 2003 John has been in leadership and business development roles including: marketing services for leading brands, a pure play B2B media company and several early stage technology and media companies. John also established Callahan's Kirkwood Area Youth Tennis Camp. John's C-level industry experience includes: multifamily, media, technology,healthcare, CPG, financial services and automotive. John enjoys business development, coaching and all things entrepreneurial. Find him at callahantennis@gmail.com.