Ad network and targeting firm Turn has promoted Bill Demas to CEO. Demas joined the company last December as president and COO; he’d been a board member since 2007. Demas is replacing Turn co-founder Jim Barnett, who will continue on as chairman. Demas has over two decades of experience in online advertising, having served as head of Yahoo’s publisher network group, and a senior exec at Overture before Yahoo acquired it in 2003. Turn has added a number of new execs to its ranks in the past few months: it brought in Tacoda vet Hugh McGoran to head sales, and Yahoo and Efficient Frontier exec Masroor Malik as VP of business operations. comScore (NSDQ: SCOR) ranked it as the fastest growing ad network in terms of reach in June. View the article here.