This breakout session presentation discusses how Adometry and Ideeli partnered to more accurately measure attribution across online and offline marketing channels. Ideeli is an online retailer that saw over 50% of display ads appear below the fold or not seen at all. Using Adometry's fractional attribution technologies, Ideeli was able to reallocate spending to top placements, eliminate inefficient placements, and reduce CPA by 14% while maintaining new member signups. For driving repeat purchases, last click understated attribution by over 90%. This insight allowed Ideeli to justify increasing ad spend, find new marketing channels, and increase repeat purchases by 30% with consistent monthly improvements.