Clicking on the icon opens a pane that basically delivers a slender version of the Twitter website, where you can view your timeline, check notifications, read and respond to DMs and do everything else you can do on the main website.
Opera claims it’s “the first major browser to add built-in Twitter in the sidebar”, although that’s a little bit of a stretch. Vivaldi – created by the developer of the original Opera browser – has offered similar Web Panels for some time, where you’ve been able to create panes for Twitter or any of the other social networks.
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