Twitter begins rolling out its algorithmic timeline, but it's opt-in—for now

After months of testing, rumors, and general user anxiety, Twitter is now employing an algorithm that displays some Tweets out of chronological order.
The feature, known as “Show me the best Tweets first,” gathers up older tweets that Twitter thinks you might have liked seeing, based on “engagement and other factors,” and pushes them to the top of the Timeline. Below this cluster of Tweets, users will still see their Timelines in reverse chronological order, and refreshi