Twitter starts subscription service in Canada, Australia

Twitter is rolling out a subscription service, starting in Canada and Australia, that offers perks like an undo button for subscribers. The subscription service will offer features that users have long asked for — but still no edit button. It includes bookmark folders for organizing saved content; an “Undo tweet” feature that gives users 30 seconds to cancel a sent tweet before its appears; a “reader mode” that makes threaded tweets easier to read; and customizable app icons and color themes. Subscribers will also get dedicated customer support.