This 3 sentence summary provides the high level and essential information from the document: Criteo is a company that provides performance display advertising and has over 550 employees globally that generated $200 million in revenue in 2011 across 4 continents and 3000 clients in 3 countries. The document discusses challenges in search marketing, how Criteo's performance display advertising works through personalized ads and bid optimization, benchmarks showing Criteo's ads outperform search ads in ROI and conversion rates, how clickers are actually valuable buyers contrary to myths, and a case study of success with Overstock