Google recently update in their algorithm for websites doorway pages that create spam searches and also spam user experience. Their team is always working to improve the quality of searches for their users and remove the span search results that create confusion. There is a huge impact on those websites that are working on doorway pages strategy to improve their ranking. All is one that Google wants to remove all spam links from their searching.
Source:-http://www.sharelocalbusiness.com/blog/google-launch-new-doorway-pages-penalty-algo-in-march-2015/