Twitter knows it has an echo chamber problem. Topics could fix that.

Twitter's plan to nudge users into interacting with accounts they don't follow is starting to take shape.

Three months after introducing topics, which allows Twitter users to follow interests the same way they'd follow individual accounts, the feature is rapidly expanding. While initially limited to sports-related topics, there are now nearly 1,000 topics available to follow. 

Astrology Twitter. Knitting Twitter. Bird Watching Twitter. Bobsledding Twitter. Cat Twitter. With these topics, it's easier than ever for Twitter users to browse new (and sometimes strange) corners of the platform they might not normally view.  Read more...