The premium service Twitter Blue is opening to users in the U.S. and New Zealand, after having launched this summer in Australia and Canada. The Blue program is available for $2.99 per month on iOS, Android and the web. Blue subscribers gain a range of features, including the ability to undo tweets within 30 seconds of posting, categorizing saved tweets into topical bookmark folders, using a reader mode for turning threads into easy-reading text, and adding a custom range of app icons. Additional features available only to iOS users include mobile color themes, a customizable navigation bar, and the ability to pin conversations. Continue reading Premium Twitter Blue Now Available in U.S. and New Zealand