2005 Google offers personalized search results informed by user’s search history; launches branded version of Analytics. 2007 Programmatic ad buying debuts. Ad exchanges sell ads in inventory with multiple ad networks and are bought via real-time bidding on a per-impression basis. Subscribers to 3G networks worldwide reach 295 million (just 9% the of global subscriber base). Music and video streaming booms. 2009 Google Instant offers real-time search results. Ad.ly in-stream advertising service pays Kim Kardashian $10,000 per tweet, a test of promoted tweets. Facebook self-service ad buying offers targeted advertising, allows targeting by geo-location and language. Amazon sales reach $25 billion. 2010