Online advertising. In 2011, Internet advertising revenues in the United States surpassed those of cable television and nearly exceeded those of broadcast television.[1]:19 In 2013, Internet advertising revenues in the United States totaled $42.8 billion, a 17% increase over the $36.57 billion in revenues in 2012.[2]:4–5 U.S. internet ad revenue hit a historic high of $20.1 billion for the first half of 2013, up 18% over the same period in 2012.[3] Online advertising is widely used across virtually all industry sectors.[1]:16 Many common online advertising practices are controversial and increasingly subject to regulation.
Online ad revenues may not adequately replace other publishers' revenue streams. Declining ad revenue has led some publishers to hide their content behind paywalls.[4] History[edit] In early days of the Internet, online advertising was mostly prohibited.
Jason Fried: Why work doesn't happen at work. Public speaking.