The Globe and Mail will introduce a new metered paywall system requiring online readers to pay for access if they read more than 10 stories a month, the newspaper said Monday. In a release, the paper said its new “digital subscription service,” called Globe Unlimited, permits “casual” readers to access up to 10 free articles or features per month, but will require users to register potentially pay to view additional content. Unlimited access to the Globe’s online content will cost $20 per month unless they have a subscription to the paper’s print edition. Readers with subscriptions to the paper’s printed product will be given full or partial discounts, depending on their subscription, the release said. Stock quotes and letters to the editor will remain free under the system and will not count towards a reader’s monthly views, the release said. It said readers will have free unlimited content to Globe and Mail stories shared on social media sites such as Facebook and Twitter. The new paywall, which the Globe referred to earlier this year, becomes effective Oct. 22, the release said. Postmedia Network Canada Corp. also announced in October 2011 that it would move to implement a metered paywall to charge readers for premium content across the websites of all of its Canadian newspapers, including the National Post, the Ottawa Citizen, and the Calgary Herald, among others. That move has not yet been implemented across the Postmedia network and followed a paywall trial the company started in May 2011 to charge readers for premium content on the websites of the Montreal Gazette and Victoria Times Colonist.