This document discusses how keyword research and strategy has changed with updates to search engines like Google Hummingbird. It recommends focusing on entire concepts and keyword groups instead of single keywords. Reverse keyword research using tools like SEMrush can help understand what keywords search engines associate with content. Proper implementation involves naturally distributing keyword groups throughout pages like titles, headings, links and descriptions. Results should be measured at the domain or page level to track ranking for multiple concepts instead of single keywords. Keywords are still important but the approach needs to consider related groups and how search engines understand queries.