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Paywall
System that prevents Internet users from accessing webpage content without a paid subscription / From Wikipedia, the free encyclopedia
A paywall is a method of restricting access to content, with a purchase or a paid subscription, especially news.[1][2] Beginning in the mid-2010s, newspapers started implementing paywalls on their websites as a way to increase revenue after years of decline in paid print readership and advertising revenue, partly due to the use of ad blockers.[3] In academics, research papers are often subject to a paywall and are available via academic libraries that subscribe.[4][5][6]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Paywall_Example.svg/320px-Paywall_Example.svg.png)
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The second wall from the left does not require the user to pay, but rather requires the user to subscribe (or register) for full access to content.
Paywalls have also been used as a way of increasing the number of print subscribers; for example, some newspapers offer access to online content plus delivery of a Sunday print edition at a lower price than online access alone.[7] Newspaper websites such as that of The Boston Globe and The New York Times use this tactic because it increases both their online revenue and their print circulation (which in turn provides more ad revenue).[7]