Black

A handy page blocker. Spending countless hours every day on Douban, Renren, Weibo, Twitter, and Facebook? Want to quit but can't resist visiting? Download this incredibly powerful blocking extension and disable those websites! This extension's outrageous settings will definitely help you succeed! How to use: - Install this extension. - Find it on the extensions management page and open its options page. - Add the domains, exact URLs, or regular expressions you want to block on the options page! - Then you'll never want to visit the websites you've blocked again!!