Over the past decade, Daniel Slotwiner has held a variety of positions in the Market Research and Media Measurement industry. Starting with his work at Knowledge Networks, Daniel sought to improve panel management techniques and led many research initiatives concerned with improving representation, retention and weighting practices. This research led to important improvements in the measurement of consumer attitudes over the web and from panels more generally. At Google and Facebook, Daniel's research and responsibilities have focused on media measurement and ad effectiveness. Today, he leads the Advertising Research team at Facebook.