This document discusses various topics related to paid search marketing, including: 1) Using modified broad match keywords to capture long-tail search queries on Google AdWords. 2) Obtaining keyword-level data for phone call conversions by implementing session-based keyword-level call tracking and analytics. 3) The basic behavioral differences between desktop, tablet, and mobile users for device targeting in paid search. 4) Emerging techniques for next-generation search retargeting beyond traditional retargeting approaches.