Ad Block

Ad Block is a increasingly popular extension for most web browsers that more and more people are starting to use. When an Adblocker is used, it gets rid of any form and advertising on the web page and therefore for any revenue obtained from the website. If more people start using adblockers websites will slowly start to lose money. I've already seen evidence of a websites asking people to turn it off on their website because it's hurting their profits. I feel that  if adblockers became more popular it may hurt the advertising industry and less will be motivated to create some brilliant ideas.