groups.google.com · blink, google, pointer-events, w3c, spec, browsers, webkit, touch, android, performance, culture · over 9 years ago
googledevelopers.blogspot.com · google, chrome, browsers, performance, w3c, spec · over 10 years ago
blogs.msdn.com · w3c, spec, learn, page-visibility-api, performance · over 11 years ago